More checking for owncloud install

src/freedombone

 # Contact details
 FREEDOMBONE_BITMESSAGE="BM-2cWuhmBvVdfrHhLoZTdspCkKeiTorUesSL"
 
-DOMAIN_NAME=
-MY_USERNAME=
-SYSTEM_TYPE=
-
 # Are we installing on a Beaglebone Black (BBB) or some other system?
 INSTALLING_ON_BBB="no"
 
 VARIANT_MEDIA="media"
 VARIANT_TOR_DONGLE="tordongle"
 
+DOMAIN_NAME=
+MY_USERNAME=
+SYSTEM_TYPE=$VARIANT_FULL
+
 # An optional configuration file which overrides some of these variables
 CONFIGURATION_FILE="freedombone.cfg"
 
       return
   fi
   if ! grep -Fxq "install_owncloud" $COMPLETION_FILE; then
-	  echo 'Tried to install the Owncloud music app, but Owncloud installation was not found'
+      echo 'Tried to install the Owncloud music app, but Owncloud installation was not found'
       exit 9823
   fi
 
       OWNCLOUD_DOMAIN_NAME=$DOMAIN_NAME
   fi
   if [ ! $OWNCLOUD_DOMAIN_NAME ]; then
-      return
+      echo 'No Owncloud domain name was specified'
+      exit 3095
   fi
-  if ! [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" ]]; then
-      if [ $SYSTEM_TYPE ]; then
-          return
+  if [[ $SYSTEM_TYPE != "$VARIANT_CLOUD" ]]; then
+      if [[ $SYSTEM_TYPE != "$VARIANT_FULL" ]]; then
+          echo "Owncloud install did not recognise the system type $SYSTEM_TYPE"
+          exit 6746
       fi
   fi
   apt-get -y --force-yes install owncloud