Fix crash on bootup termination

Author: tmolitor-stud-tu

Monal/Classes/MonalAppDelegate.m

@@ -321,6 +321,11 @@ -(id) init
     _shutdownPending = NO;
     _wasFrozen = NO;
 
+    //register BGTasks as early as possible to make sure a subsequent app termination
+    //without proper "bootup" won't crash on unknown bgtask identifiers
+    DDLogInfo(@"calling MonalAppDelegate configureBackgroundTasks");
+    [self configureBackgroundTasks];
+    
     //[self runParserTests];
     //[self runSDPTests];
     //[HelperTools flushLogsWithTimeout:0.250];
@@ -563,10 +568,6 @@ -(BOOL) application:(UIApplication*) application didFinishLaunchingWithOptions:(
     //handle message notifications by initializing the MLNotificationManager
     [MLNotificationManager sharedInstance];
 
-    //register BGTask
-    DDLogInfo(@"calling MonalAppDelegate configureBackgroundTasks");
-    [self configureBackgroundTasks];
-    
     // Play audio even if phone is in silent mode
     [HelperTools configureDefaultAudioSession];
     self.audioState = MLAudioStateNormal;