Merge pull request #6 from vishna/master

More than one refresh runnable allowed
Merge pull request #7 from vishna/master

Indicate fetching with spinner onResume
Sync load/save + removeById
Save all lists, list meta data
Save metadata
More thought thought list metadata
Save topSeen and scrollPosition ids
Merge pull request #9 from vishna/lists_extended

Lists extended
Notify adapter about upcoming change, remove trim
Merge pull request #10 from vishna/lists_extended

Notify adapter about upcoming change, remove trim
WILL_CHANGE action shouldn't be delivered over post(Runnable)
Merge pull request #11 from vishna/lists_extended

WILL_CHANGE action shouldn't be delivered over post(Runnable)
Fix header count and weird repositionning