Selecting "Add New" starts DetailsActivity with title "Add New"
Clicking on an existing item in the grocery list starts DetailsActivity with title "Edit Details" and the item's name prepopulated.
Pressing "Cancel" in Details does not add an item
Pressing "OK" in Details w/ an empty name does not add the item
Pressing "OK" in Details does add the item
Refactored a bunch of unit tests
Trying to get Mockito working