Second attempt at notification is more successful

Created an alarm that repeatedly goes off and spawns a service. Service
compares top event in newly retrieved list against old list; if
different, sends notification.
Lots of problems, but it kinda works.
Fixed alarm/notification issue; visual updates

Fixed the alarm issue so it now triggers 30 seconds after the list is
shown, and every 30 seconds after that. Also made some visual updates -
edited the splash screen image and app logo.
Delete old app icon