Windows: Uninstall start menu entries
Don't 'style' QGroupbot borders in settings
Add simple push to talk with P

Fixes #734
Listen for push-to-talk shortcut on more widgets
Silence IPC:processEvents failed to lock
Fix possible crash on ~IPC
Better debug output for groupchat not found
Fix vol must be muted to actually hear things
Use a source per call peer
Augment audio queue size, fixes quality issues

Closes #690
Fix push to talk even when text edit focused
Fix memory disclosure in audio send code (valgrind)
I implemented a new setting, which toggles the visibility of the system tray icon.
Background: On Ubuntu 14.04, system trays in Qt5 don't integrate into Unity.
Update french translation
Merge branch 'pr742'
Updater: Update OS X update server public key
Fix conflicting declaration struct/class ToxID
Fix conflicting declarations struct/class vpx_image
Remove unused variable
minor autoaway tweak