Patch for listening to self bug

Fixes #63

Removed user logged in requirement for listening to own mic. User can now listen to own mic without being logged in.
Merge pull request #64 from azoff/63-bug-loggedoutlisten

Patch for listening to self bug
Caption Controller Animations

Re: #22

- Added overlay caption layer and animation for appending new text
- Added transition animation with new captions coming into history
- Added overlay caption layer and animation for appending new text
- Animation tweaks

changes some back to master, color tweak to caption controller text