Crashlytics: Disable in debug builds

This way no matter what, a debug build will not report to crashlytics.
As it currently did.

android/app/build.gradle

@@ -77,6 +77,7 @@ android {
             ndk {
                 abiFilters 'arm64-v8a', 'armeabi-v7a', 'x86', 'x86_64'
             }
+            ext.enableCrashlytics = false
         }
     }
 

lib/main.dart

@@ -11,6 +11,7 @@ void main() async {
   var pref = await SharedPreferences.getInstance();
   Settings.instance.load(pref);
 
+  assert(JournalApp.isInDebugMode = true);
   var reportCrashes =
       !JournalApp.isInDebugMode && Settings.instance.collectCrashReports;
 
@@ -22,6 +23,7 @@ void main() async {
     }
   };
 
+  print("Report Crashes: $reportCrashes");
   if (reportCrashes) {
     await FlutterCrashlytics().initialize();
   }