Remove fields from plugin services

* TaskListMetadataDao
* TagDataDao
* StoreObjectDao
* ExceptionService
* TagDataService
Remove exception service, add slf4j-android
Remove debug flag
Defer injection

Closes #27
Use dagger for database injection
More dagger injections
Format @Autowired for easier searching
Remove TagService singleton, inject with dagger
Use dagger for remaining injectables
Remove class instantiation, unnecessary injections
Use dagger for astrid activities
Fix refresh broadcast injection
Inject GtasksSyncV2Provider with dagger
Inject remaining action bar activities
Add InjectingActivity
Add InjectingListFragment
Add InjectingListActivity
Add InjectingAppWidgetProvider
Add InjectingService
Add InjectingFragment