Updated queryCapabilities to use the same code as in TasksSyncManager, added...

Updated queryCapabilities to use the same code as in TasksSyncManager, added try-catch block for sync-method (#60)

* Updated queryCapabilities to use the same code as in TasksSyncManager
Might solve #59

* Added try-catch block for sync-method
updated min version for JtxBoard in TaskProvider.kt
Should solve #59

* removed syncResult.databaseError = true

* Changed wrong file before

* Created TasksSyncUtils to put notifyProviderTooOld method

* Cleaned up imports

* Added Version check in JtxSyncAdapterService.kt, required TaskProvider.checkVersion to be public

* Minor changes

Co-authored-by: Ricki Hirner <hirner@bitfire.at>