StaggeredGridView: fill the children in a gap when scroll up
StaggeredGridView: fill the children in a gap when scroll up
StaggeredGridView: fill the children in a gap when scroll up
Merge remote-tracking branch 'origin/sprint3' into sprint2

Conflicts:
	Omebee/EtsyLib/src/main/java/com/etsy/android/grid/ExtendableListView.java
	Omebee/app/src/main/java/com/omebee/android/layers/ui/models/ProductsLauncherModel.java
Init data for warehouse