* Basic group management
* Assign cards to groups
* Fix lint
* Fix findbugs 'dodgy code'
* Group name as unique key
* More group tests
* Import/export groups
* Implement group renaming and deleting
* Fix findBugs
* Fix chip marking in edit activity
* Group import/export tests
* Fix some state bugs
* Some last fixes
* Remove redundant if statement
* Fix findBugs
* Deduplicate code
* Cleanup
* Fix groups not showing up with new card
* Fix capture and enter button touching
* Fix dialog button look
This adds config options for the colors used for the store text
and background when displaying the store name in the single
card view or the thumbnail for the card list.
This is necessary, as Robolectric 3.0 did not work
with the newer Android SDK. Further, Robolectric 3.3.2
did not like running tests at SDK 17, so this was
also bumped.