Tidying

src/freedombone-app-babel

 }
 
 function install_babel {
-    if grep -Fxq "install_babel" $COMPLETION_FILE; then
+    if [[ $(app_is_installed babel) == "1" ]]; then
         return
     fi
     if [[ $ENABLE_BABEL != "yes" ]]; then
 
     function_check configure_firewall_for_babel
     configure_firewall_for_babel
-    echo 'install_babel' >> $COMPLETION_FILE
+    install_completed babel
 }
 
 # NOTE: deliberately there is no "exit 0"

src/freedombone-app-batman

         mesh_install_batman
         return
     fi
-    if grep -Fxq "install_batman" $COMPLETION_FILE; then
+    if [[ $(app_is_installed batman) == "1" ]]; then
         return
     fi
     if [[ $ENABLE_BATMAN != "yes" ]]; then
 
     function_check configure_firewall_for_batman
     configure_firewall_for_batman
-    echo 'install_batman' >> $COMPLETION_FILE
+    install_completed batman
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-blog

         exit 5062
     fi
 
-    if grep -Fxq "install_blog" $COMPLETION_FILE; then
+    if [[ $(app_is_installed blog) == "1" ]]; then
         return
     fi
 
         echo "Blog domain:$FULLBLOG_DOMAIN_NAME" >> $COMPLETION_FILE
     fi
 
-    echo 'install_blog' >> $COMPLETION_FILE
+    install_completed blog
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-blogstatic

         return
     fi
 
-    if grep -Fxq "install_blogstatic" $COMPLETION_FILE; then
+    if [[ $(app_is_installed blogstatic) == "1" ]]; then
         return
     fi
 
     chown -R $MY_USERNAME:$MY_USERNAME $STATIC_BLOG_INSTALL_DIR
     chown -R www-data:www-data $STATIC_BLOG_PATH
 
-    echo 'install_blogstatic' >> $COMPLETION_FILE
+    install_completed blogstatic
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-cjdns

 }
 
 function install_cjdns {
-    if grep -Fxq "install_cjdns" $COMPLETION_FILE; then
+    if [[ $(app_is_installed cjdns) == "1" ]]; then
         return
     fi
     install_cjdns_main
     install_cjdns_tools
-    echo 'install_cjdns' >> $COMPLETION_FILE
+    install_completed cjdns
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-dlna

 }
 
 function install_dlna {
-    if grep -Fxq "install_dlna" $COMPLETION_FILE; then
+    if [[ $(app_is_installed dlna) == "1" ]]; then
         return
     fi
     install_dlna_main
     script_for_attaching_usb_drive
-    echo 'install_dlna' >> $COMPLETION_FILE
+    install_completed dlna
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-emacs

 }
 
 function install_emacs {
-    if grep -Fxq "install_emacs" $COMPLETION_FILE; then
+    if [[ $(app_is_installed emacs) == "1" ]]; then
         return
     fi
     update-alternatives --set editor /usr/bin/emacs24
     cp /home/$MY_USERNAME/.emacs /root/.emacs
     chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.emacs
 
-    echo 'install_emacs' >> $COMPLETION_FILE
+    install_completed emacs
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-gnusocial

 }
 
 function install_gnusocial {
-    if grep -Fxq "install_gnusocial" $COMPLETION_FILE; then
+    if [[ $(app_is_installed gnusocial) == "1" ]]; then
         return
     fi
     install_gnusocial_main
     install_gnusocial_plugin_sharings
     install_gnusocial_plugin_sharings_theme
     install_gnusocial_plugin_nsfw
-    echo 'install_gnusocial' >> $COMPLETION_FILE
+    install_completed gnusocial
 }
 
 # NOTE: deliberately there is no "exit 0"

src/freedombone-app-gogs

         return
     fi
 
-    if grep -Fxq "install_gogs" $COMPLETION_FILE; then
+    if [[ $(app_is_installed gogs) == "1" ]]; then
         return
     fi
 
     else
         sed -i "s|Gogs version.*|Gogs version:$GOGS_VERSION|g" $COMPLETION_FILE
     fi
-    echo 'install_gogs' >> $COMPLETION_FILE
+    install_completed gogs
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-hubzilla

         return
     fi
 
-    if grep -Fxq "install_hubzilla" $COMPLETION_FILE; then
+    if [[ $(app_is_installed hubzilla) == "1" ]]; then
         return
     fi
 
     ${PROJECT_NAME}-addemail -u $MY_USERNAME -e "noreply@$HUBZILLA_DOMAIN_NAME" -g hubzilla --public no
 
     echo "Hubzilla domain:${HUBZILLA_DOMAIN_NAME}" >> $COMPLETION_FILE
-    echo 'install_hubzilla' >> $COMPLETION_FILE
+    install_completed hubzilla
 }
 
 # NOTE: deliberately there is no "exit 0"

src/freedombone-app-ipfs

         mesh_install_ipfs_js
         return
     fi
-    if grep -Fxq "install_ipfs_js" $COMPLETION_FILE; then
+    if [[ $(app_is_installed ipfs_js) == "1" ]]; then
         return
     fi
 
     function_check configure_firewall_for_ipfs
     configure_firewall_for_ipfs
 
-    echo 'install_ipfs_js' >> $COMPLETION_FILE
+    install_completed ipfs_js
 }
 
 function mesh_install_ipfs_go {
         mesh_install_ipfs_go
         return
     fi
-    if grep -Fxq "install_ipfs_go" $COMPLETION_FILE; then
+    if [[ $(app_is_installed ipfs_go) == "1" ]]; then
         return
     fi
 
     function_check configure_firewall_for_ipfs
     configure_firewall_for_ipfs
 
-    echo 'install_ipfs_go' >> $COMPLETION_FILE
+    install_completed ipfs_go
 }
 
 function install_ipfs {

src/freedombone-app-irc

 }
 
 function install_irc {
-    if grep -Fxq "install_irc" $COMPLETION_FILE; then
+    if [[ $(app_is_installed irc) == "1" ]]; then
         return
     fi
     install_irc_server
     install_irc_client
-    echo 'install_irc' >> $COMPLETION_FILE
+    install_completed irc
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-librevault

         return
     fi
 
-    if grep -Fxq "install_librevalut" $COMPLETION_FILE; then
+    if [[ $(app_is_installed librevault) == "1" ]]; then
         return
     fi
 
     systemctl enable librevault-daemon
     systemctl start librevault-daemon
 
-    echo 'install_librevault' >> $COMPLETION_FILE
+    install_completed librevault
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-mediagoblin

         chown -hR mediagoblin:www-data $MEDIAGOBLIN_WORKING_DIRECTORY
     fi
 
-    if grep -Fxq "install_mediagoblin" $COMPLETION_FILE; then
+    if [[ $(app_is_installed mediagoblin) == "1" ]]; then
         return
     fi
 
         sed -i "s/Mediagoblin domain.*/Mediagoblin domain:$MEDIAGOBLIN_DOMAIN_NAME/g" $COMPLETION_FILE
     fi
 
-    echo 'install_mediagoblin' >> $COMPLETION_FILE
+    install_completed mediagoblin
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-mumble

 }
 
 function install_mumble {
-    if grep -Fxq "install_mumble" $COMPLETION_FILE; then
-        return
-    fi
-    if grep -Fxq "install_voip" $COMPLETION_FILE; then
+    if [[ $(app_is_installed mumble) == "1" ]]; then
         return
     fi
     apt-get -y install mumble-server
 
     function_check configure_firewall_for_voip
     configure_firewall_for_voip
-    echo 'install_mumble' >> $COMPLETION_FILE
+    install_completed mumble
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-rss

 }
 
 function install_rss {
-    if grep -Fxq "install_rss" $COMPLETION_FILE; then
+    if [[ $(app_is_installed rss) == "1" ]]; then
         return
     fi
     install_rss_main
     install_rss_gnusocial
     install_rss_mobile_reader
-    echo 'install_rss' >> $COMPLETION_FILE
+    install_completed rss
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-searx

         exit 62429
     fi
 
-    if grep -Fxq "install_searx" $COMPLETION_FILE; then
+    if [[ $(app_is_installed searx) == "1" ]]; then
         return
     fi
 
         chmod 600 /home/$MY_USERNAME/README
     fi
 
-    echo 'install_searx' >> $COMPLETION_FILE
+    install_completed searx
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-sip

 }
 
 function install_sip {
-    if grep -Fxq "install_sip" $COMPLETION_FILE; then
+    if [[ $(app_is_installed sip) == "1" ]]; then
         return
     fi
     install_sip_main
     update_sipwitch_daemon
-    echo 'install_sip' >> $COMPLETION_FILE
+    install_completed sip
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-syncthing

         return
     fi
 
-    if grep -Fxq "install_syncthing" $COMPLETION_FILE; then
+    if [[ $(app_is_installed syncthing) == "1" ]]; then
         return
     fi
 
 
     function_check configure_firewall_for_syncthing
     configure_firewall_for_syncthing
-    echo 'install_syncthing' >> $COMPLETION_FILE
+    install_completed syncthing
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-tahoelafs

         return
     fi
 
-    if grep -Fxq "install_tahoelafs" $COMPLETION_FILE; then
+    if [[ $(app_is_installed tahoelafs) == "1" ]]; then
         return
     fi
 
     systemctl daemon-reload
     systemctl start tahoelafs
 
-    echo 'install_tahoelafs' >> $COMPLETION_FILE
+    install_completed tahoelafs
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-tox

 
 function install_tox {
     if [ ! $INSTALLING_MESH ]; then
-        if grep -Fxq "install_tox" $COMPLETION_FILE; then
+        if [[ $(app_is_installed tox) == "1" ]]; then
             return
         fi
     fi
         install_tox_client
     fi
 
-    echo 'install_tox' >> $COMPLETION_FILE
+    install_completed tox
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-vpn

 }
 
 function install_vpn {
-    if grep -Fxq "install_vpn" $COMPLETION_FILE; then
+    if [[ $(app_is_installed vpn) == "1" ]]; then
         return
     fi
     if ! grep -q "repo.universe-factory.net" /etc/apt/sources.list; then
             exit 52026
         fi
     fi
-    echo 'install_vpn' >> $COMPLETION_FILE
+    install_completed vpn
 }
 
 # NOTE: deliberately there is no "exit 0"

src/freedombone-app-webmail

 }
 
 function install_webmail {
-    if grep -Fxq "install_webmail" $COMPLETION_FILE; then
+    if [[ $(app_is_installed webmail) == "1" ]]; then
         return
     fi
     if [ -d /etc/apache2 ]; then
         chmod 600 /home/$MY_USERNAME/README
     fi
 
-    echo 'install_webmail' >> $COMPLETION_FILE
+    install_completed webmail
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-wiki

 }
 
 function install_wiki {
-    if grep -Fxq "install_wiki" $COMPLETION_FILE; then
+    if [[ $(app_is_installed wiki) == "1" ]]; then
         return
     fi
     if [ ! $WIKI_DOMAIN_NAME ]; then
     fi
 
     echo "Wiki domain:$WIKI_DOMAIN_NAME" >> $COMPLETION_FILE
-    echo 'install_wiki' >> $COMPLETION_FILE
+    install_completed wiki
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-xmpp

 }
 
 function install_xmpp {
-    if grep -Fxq "install_xmpp" $COMPLETION_FILE; then
+    if [[ $(app_is_installed xmpp) == "1" ]]; then
         return
     fi
     install_xmpp_main
     install_xmpp_client
-    echo 'install_xmpp' >> $COMPLETION_FILE
+    install_completed xmpp
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-app-zeronet

         mesh_zeronet_forum
         return
     fi
-    if grep -Fxq "install_zeronet" $COMPLETION_FILE; then
+    if [[ $(app_is_installed zeronet) == "1" ]]; then
         return
     fi
     install_zeronet_main
     install_zeronet_blog
     install_zeronet_mail
     install_zeronet_forum
-    echo 'install_zeronet' >> $COMPLETION_FILE
+    install_completed zeronet
 }
 
 # NOTE: deliberately no exit 0

src/freedombone-utils-selector

     fi
 }
 
+function install_completed {
+    if [ ! ${1} ]; then
+        exit 673935
+    fi
+    echo "install_${1}" >> $COMPLETION_FILE
+}
+
 function get_apps_installed {
     for a in "${APPS_AVAILABLE[@]}"
     do