icons & higher target sdk
refactor (mainly formating)
speak category name too when clicked
category tabs; random fixes

- add basic tabs, for now: all, recently used
- once categoty selected - hide not important actions, so more space is available for icons and UI is less overwhelming
- it should slightly simplify installation of TTS pack
cleanup
Merge pull request #59 from vidma/categ_tabs_n_fixes

Category tabs n fixes