TextView with Selection Contextual Mode

Context menu entries have been moved to a contextual mode in the action bar.

Change Input Method has been removed and *should be added to the system bar instead*.

Add word to dictionnary has also been removed and should now be done using the suggestioni
bar "tap on word to add" feature.

Change-Id: I767373f53515b2d6a06500321b4b12ed0b05a9b6