Revert "Use HtmlRoosterActivity as fallback"

This reverts commit 2fcdcef42749a56aee2b968a3391daf8c2be15f2.
Notifications partially done

-Notifications can be set on/off through the settings menu.
-Notifications actually work
-Settings menu also has NL support

TO DO
-Correct info on the notifications & display them at the correct time
Notifications partially done

-Notifications work
-Settings menu NL support

TODO
-Display notifs at correct time with correct info