alarms: minor registration layout changes in alarms_item
ods: minor cleanup in Processor
ods: update ods data instead of deleting and fetching it

Patch currently only works for pegelonline data, as ODS does currently
not support updating data internally
ods: SyncStatusListenerTest supports check if sync is running
levels: show loading icon when syncing stations list
news: minor refactoring
news: show newest item on top
news: added NewsUpdateListener
news: added NewsLoader for loading news in background
news: swipe to dismissis is slightly smoother