Fix wrong time calculation
Remove notification big-picture style (looks bad) and make app save more
high-res logos since otherwise the lock screen might look bad, too.
Fix issue #120: Use the new (4.4) storage api to write/read opml and
select folders

Conflicts:
	src/net/alliknow/podcatcher/ScrapePodcastsActivity.java
	src/net/alliknow/podcatcher/SelectFileActivity.java
	src/net/alliknow/podcatcher/model/tasks/StorePodcastListTask.java