Tidying

src/freedombone-app-blog

 }
 
 function upgrade_blog {
-    if ! grep -Fxq "install_blog" $COMPLETION_FILE; then
-        return
+    if grep -q "FULLBLOG_DOMAIN_NAME" $CONFIGURATION_FILE; then
+        FULLBLOG_DOMAIN_NAME=$(grep "FULLBLOG_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
     fi
+
     function_check set_repo_commit
     set_repo_commit /var/www/$FULLBLOG_DOMAIN_NAME/htdocs "Blog commit" "$FULLBLOG_COMMIT" $FULLBLOG_REPO
 

src/freedombone-app-gnusocial

 }
 
 function upgrade_gnusocial {
-    if ! grep -Fxq "install_gnusocial_main" $COMPLETION_FILE; then
-        return
+    if grep -q "GNU Social domain" $COMPLETION_FILE; then
+        MICROBLOG_DOMAIN_NAME=$(cat $COMPLETION_FILE | grep "GNU Social domain" | head -n 1 | awk -F ':' '{print $2}')
     fi
 
     # update to the next commit

src/freedombone-app-gogs

 }
 
 function upgrade_gogs {
-    if ! grep -Fxq "install_gogs" $COMPLETION_FILE; then
-        return
-    fi
-
     if ! grep -q "Gogs version:" $COMPLETION_FILE; then
         return
     fi

src/freedombone-app-hubzilla

 }
 
 function upgrade_hubzilla {
-    if ! grep -Fxq "install_hubzilla" $COMPLETION_FILE; then
-        return
+    if grep -q "HUBZILLA_DOMAIN_NAME" $CONFIGURATION_FILE; then
+        HUBZILLA_DOMAIN_NAME=$(grep "HUBZILLA_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
     fi
+
     HUBZILLA_PATH=/var/www/$HUBZILLA_DOMAIN_NAME/htdocs
 
     function_check set_repo_commit

src/freedombone-app-ipfs

 }
 
 function upgrade_ipfs_go {
-    if ! grep -Fxq "install_ipfs_go" $COMPLETION_FILE; then
+    if [[ $(app_is_installed ipfs_go) == "0" ]]; then
         return
     fi
 
 }
 
 function upgrade_ipfs_js {
-    if ! grep -Fxq "install_ipfs_js" $COMPLETION_FILE; then
+    if [[ $(app_is_installed ipfs_js) == "0" ]]; then
         return
     fi
 

src/freedombone-app-irc

 }
 
 function install_irc_server {
-    if grep -Fxq "install_irc_server" $COMPLETION_FILE; then
+    if [[ $(app_is_installed irc_server) == "1" ]]; then
         return
     fi
     apt-get -y install ngircd
 }
 
 function install_irc_client {
-    if grep -Fxq "install_irc_client" $COMPLETION_FILE; then
+    if [[ $(app_is_installed irc_client) == "1" ]]; then
         return
     fi
     apt-get -y install irssi

src/freedombone-app-librevault

 }
 
 function upgrade_librevault {
-    if ! grep -Fxq "install_librevault" $COMPLETION_FILE; then
-        return
-    fi
-
     function_check set_repo_commit
 
     if [ -d $INSTALL_DIR/protobuf ]; then

src/freedombone-app-searx

 }
 
 function upgrade_searx {
-    if ! grep -Fxq "install_searx" $COMPLETION_FILE; then
-        return
-    fi
-
     set_repo_commit $SEARX_PATH/searx "Search engine commit" "$SEARX_COMMIT" $SEARX_REPO
     if grep "Search engine key" $COMPLETION_FILE; then
         if [ -f ${SEARX_PATH}/searx/searx/settings.yml ]; then

src/freedombone-app-sip

 }
 
 function install_sip_main {
-    if grep -Fxq "install_sip_main" $COMPLETION_FILE; then
+    if [[ $(app_is_installed sip_main) == "1" ]]; then
         return
     fi
 
 
     function_check configure_firewall_for_sip4
     configure_firewall_for_sip4
-    echo 'install_sip_main' >> $COMPLETION_FILE
+    install_completed sip_main
 }
 
 function install_sip_turn {
-    if grep -Fxq "install_sip_turn" $COMPLETION_FILE; then
+    if [[ $(app_is_installed sip_turn) == "1" ]]; then
         return
     fi
 
 
     function_check configure_firewall_for_voip_turn
     configure_firewall_for_voip_turn
-    echo 'install_sip_turn' >> $COMPLETION_FILE
+    install_completed sip_turn
 }
 
 function install_sip {

src/freedombone-app-tox

 }
 
 function upgrade_tox {
-    if ! grep -Fxq "install_tox" $COMPLETION_FILE; then
-        return
-    fi
     function_check set_repo_commit
     set_repo_commit $INSTALL_DIR/toxcore "toxcore commit" "$TOXCORE_COMMIT" $TOXCORE_REPO
 
 }
 
 function install_tox_node {
-    if grep -Fxq "install_tox_node" $COMPLETION_FILE; then
+    if [[ $(app_is_installed tox_node) == "1" ]]; then
         return
     fi
 
 
     function_check configure_firewall_for_tox
     configure_firewall_for_tox
-    echo 'install_tox_node' >> $COMPLETION_FILE
+    install_completed tox_node
 }
 
 function install_tox_client {
-    if grep -Fxq "install_tox_client" $COMPLETION_FILE; then
+    if [[ $(app_is_installed tox_client) == "1" ]]; then
         return
     fi
 
     function_check mesh_tox_client
     mesh_tox_client
 
-    echo 'install_tox_client' >> $COMPLETION_FILE
+    install_completed tox_client
 }
 
 function mesh_tox_node {

src/freedombone-app-webmail

 }
 
 function upgrade_webmail {
-    if ! grep -Fxq "install_webmail" $COMPLETION_FILE; then
-        return
-    fi
     function_check set_repo_commit
     set_repo_commit $WEBMAIL_PATH "Webmail commit" "$WEBMAIL_COMMIT" $WEBMAIL_REPO
 }

src/freedombone-app-xmpp

 }
 
 function upgrade_xmpp {
-    if ! grep -Fxq "install_xmpp_main" $COMPLETION_FILE; then
-        return
-    fi
     function_check update_prosody_modules
     update_prosody_modules
 }
 function install_xmpp_main {
     update_prosody_modules
 
-    if grep -Fxq "install_xmpp_main" $COMPLETION_FILE; then
+    if [[ $(app_is_installed xmpp_main) == "1" ]]; then
         return
     fi
     apt-get -y install lua-sec lua-bitop
     configure_firewall_for_xmpp
     xmpp_email_headers
 
-    echo 'install_xmpp_main' >> $COMPLETION_FILE
+    install_completed xmpp_main
 }
 
 function install_xmpp_client {
-    if grep -Fxq "install_xmpp_client" $COMPLETION_FILE; then
+    if [[ $(app_is_installed xmpp_client) == "1" ]]; then
         return
     fi
     apt-get -y install profanity
     chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.local
     chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.config
 
-    echo 'install_xmpp_client' >> $COMPLETION_FILE
+    install_completed xmpp_client
 }
 
 function install_xmpp {

src/freedombone-app-zeronet

 }
 
 function upgrade_zeronet {
-    if ! grep -Fxq "install_zeronet" $COMPLETION_FILE; then
-        return
-    fi
     function_check set_repo_commit
     set_repo_commit $MESH_INSTALL_DIR/zeronet "ZeroNet commit" "$ZERONET_COMMIT" $ZERONET_REPO
     set_repo_commit $MESH_INSTALL_DIR/zeronet/ZeroBlog "ZeroNet Blog commit" "$ZERONET_BLOG_COMMIT" $ZERONET_BLOG_REPO
 }
 
 function install_zeronet_blog {
-    if grep -Fxq "install_zeronet_blog" $COMPLETION_FILE; then
+    if [[ $(app_is_installed zeronet_blog) == "1" ]]; then
         return
     fi
 
         echo "ZeroNet Blog private key: $ZERONET_BLOG_PRIVATE_KEY" >> /home/$MY_USERNAME/README
     fi
 
-    echo 'install_zeronet_blog' >> $COMPLETION_FILE
+    install_completed zeronet_blog
 }
 
 function install_zeronet_mail {
+    if [[ $(app_is_installed zeronet_mail) == "1" ]]; then
     if grep -Fxq "install_zeronet_mail" $COMPLETION_FILE; then
         return
     fi
         echo $"ZeroNet Mail private key: $ZERONET_MAIL_PRIVATE_KEY" >> /home/$MY_USERNAME/README
     fi
 
-    echo 'install_zeronet_mail' >> $COMPLETION_FILE
+    install_completed zeronet_mail
 }
 
 function install_zeronet_forum {
-    if grep -Fxq "install_zeronet_forum" $COMPLETION_FILE; then
+    if [[ $(app_is_installed zeronet_forum) == "1" ]]; then
         return
     fi
 
         echo $"ZeroNet Forum private key: $ZERONET_FORUM_PRIVATE_KEY" >> /home/$MY_USERNAME/README
     fi
 
-    echo 'install_zeronet_forum' >> $COMPLETION_FILE
+    install_completed zeronet_forum
 }
 
 function install_zeronet_main {
-    if grep -Fxq "install_zeronet_main" $COMPLETION_FILE; then
+    if [[ $(app_is_installed zeronet_main) == "1" ]]; then
         return
     fi
 
 
     function_check configure_firewall_for_zeronet
     configure_firewall_for_zeronet
-    echo 'install_zeronet_main' >> $COMPLETION_FILE
+    install_completed zeronet_main
 }
 
 function mesh_zeronet {