feat(Nextcloud): add uninstall parameter and do some refactorings

nextcloud-update.sh

@@ -1,22 +1,27 @@
 #!/usr/bin/env bash
 
-APP_LOCATION=$HOME/html
+APP_LOCATION=~/html
+
+function ncc
+{
+  php $APP_LOCATION/occ "$@"
+}
 
 ## Updater automatically works in maintenance:mode.
 ## Use the Uberspace backup system for files and database if you need to roll back.
 ## The Nextcloud updater creates backups only to safe base and app code data and config files
 ## so it takes ressources you might need for your productive data.
 ## Deactivate NC-updater Backups with --no-backup
-php "$APP_LOCATION"/updater/updater.phar --no-backup --no-interaction
+php $APP_LOCATION/updater/updater.phar --no-backup --no-interaction
 
 ## database optimisations
-php "$APP_LOCATION"/occ db:add-missing-primary-keys --no-interaction
-php "$APP_LOCATION"/occ db:add-missing-columns --no-interaction
-php "$APP_LOCATION"/occ db:add-missing-indices --no-interaction
-php "$APP_LOCATION"/occ db:convert-filecache-bigint --no-interaction
+ncc db:add-missing-primary-keys --no-interaction
+ncc db:add-missing-columns --no-interaction
+ncc db:add-missing-indices --no-interaction
+ncc db:convert-filecache-bigint --no-interaction
 
-php "$APP_LOCATION"/occ app:update --all
-/usr/sbin/restorecon -R "$APP_LOCATION"
+ncc app:update --all
+/usr/sbin/restorecon -R $APP_LOCATION
 
 if test -f ~/etc/services.d/notify_push.ini
 then supervisorctl restart notify_push