added method to get all items from cache.
Merge pull request #19 from mattelacchiato/master

Added method to get all items from cache
3244-Pull-to-refresh-in-missions-screens-causes-weird-scrolling
update just single view in ListView after pushing object to storage
Merge pull request #20 from tobiasheine/master

weird scrolling + single listview item update
Merge branch 'master' of github.com:eyeem/PotatoLibrary

Conflicts:
	library/src/com/eyeem/storage/Storage.java