Use StickyGridHeaders 1.0 jar instead of library project.
Set headers sticky in code.
Restore unlimited activity for widget, DashClock ext.
Switch to base variant of sticky grid headers interface.
Add new infinite scrolling setting for activity stream.
Only show episodes with airtime, prepare for infinite scrolling in activity.
Add infinite scrolling pref to activity actions.
Move hide specials setting to ActivitySettings.
Move only favorites setting to ActivitySettings.
Fix old hide specials pref refs.
Remove superfluous method.
Fix wrong conditional.
Merge branch 'gridheaders-speedup' into beta