We don't need to call ``updateRelativeTimeViews`` when the activity is paused, because the user likely won't notice it.
Despite that onResume already calls ``updateRelativeTimeViews`` so there is no need to do that twice.
- bugfix: have ServiceConnection created only once!
- select the context within the PlayerHolder to start, stop, bind or unbind the service
-> we have to make sure the Service is started AND stopped within the same context
-> so let PlayerHolder be the one to select the context
- remove removeListener() and replace the call with setListener(null)
- Compatibility: use ContextCompat.startForegroundService instead of startService()
It will be shown even when nothing could be loaded not due to a network error, and the user can choose to ignore or report it.
Also improve error reporting arguments
Also completely refactor error activity
Also improve some code here and there
Now only the subscriptions from the selected group by the user will be
loaded.
Also add an option to decide how much time have to pass since the last
refresh before the subscription is deemed as not up to date. This helps
when a subscription appear in multiple groups, since updating in one
will not require to be fetched again in the others.
- Introduce Groupie for easier lists implementations
- Use some of the new components of the Android Architecture libraries
- Add a bunch of icons for groups, using vectors, which still is
compatible with older APIs through the compatibility layer