Move Mod plugins out of CallButtonFragment to ModButtonFragment

Things were getting crowded.
Add a new button bar explicitly for plugins.

Tickets CD-592 & NOTES-101
Change-Id: I1bdf074d8e3417161eb29cf05140016b084c5006
17 files changed
tree: 69ad3d3764faea0c5001c49f4b4173b917475fb3
  1. res/
  2. src/
  3. tests/
  4. .gitreview
  5. proguard.flags