Undo-Redo ButtonView changes if not pressable.
Merge branch 'master' into FE_RedoUndoButtonView
Adapting for API lvl 8
Merge branch 'master' into FE_RedoUndoButtonView
AddBrickFragment added and actionbar implemented
added listing bricks in categories to addBrickFragment
Merge branch 'master' into FE_RedoUndoButtonView
Refactoring
Testcase add and refactoring
Merge remote-tracking branch 'origin/master' into addBrickFragment_Ilija
Finished AddBrickFragment and added Tests
Added license text to AddBrickFragmentTest
Merge branch 'master' into FE_RedoUndoButtonView
Merge branch 'master' into FE_RedoUndoButtonView
Add of new icons for Formula Editor.
Keyboard view update with new icons.

* Move of lines and ellipsize attributes to xml layout.
Refactor of keyboard layout.

* FormulaEditorButton styles update.
* New style for image buttons.
Keyboard text color update.
Raw implementation of delete view logic.
Merge remote-tracking branch 'origin/master' into addBrickFragment_Ilija