Start the update alarm on start of the app.
Merge branch 'update_alarm' of git://github.com/toggles/AntennaPod into
toggles-update_alarm

Conflicts:
	src/de/danoeh/antennapod/PodcastApp.java
Merge branch 'toggles-update_alarm' into develop

Conflicts:
	src/de/danoeh/antennapod/PodcastApp.java
Reset alarm on reboot and app upgrade