Implemented search functionality for all galleries.
Fixed a bug with Preferences that would cause the new values not to be updated in Android.
Fixed small typo
Javadocs and removed Deprecated annotation.
Merge pull request #113 from RotaruDan/ProjectGalleryFunctionality

Implemented search functionality for all galleries.
Added getKeyboardFocus to views
Added clipboard
Added cut, copy and paste actions
Added copy paste of scenes
Avoid pasting when clipboard is empty
Refactor ScenePasteListener to use AddScene action
Added better handling for setting keyboard focus owner
Added sceneleemnt copy paste
Docs for clipboard
Adde cut to scenes. Small bug fix in delete scene, along with a new test for it
Adde cut to scenes. Small bug fix in delete scene, along with a new test for it
Refactor in SelectedOverlay
Added cut to scene elements