Add appcompat library into project.
Added parent navigation to ActionBar.
Use ActionBar subtitle for event count.
Bump target SDK to remove the duplicate Menu icon.
Use getSupportActionBar for support on older devices.
Added colour to action bar.
Updated event details template a bit.
Update talk list display.
Update talk details display.
Update event comments display.
Update talk comments display.
Handle Add New Comment buttons visibility.
Authenticator activity has an ActionBar.
ActionBar also links with the web view for the indeterminate progress.
Remove redundant strings.
Added newly-drawn icons.
Fix old package references.