Fix issues #86, #83: Show downloaded episodes only when offline, Also
add downloaded (not in feed) episodes to the list of "all" episodes

Conflicts:
	src/net/alliknow/podcatcher/EpisodeListActivity.java
	src/net/alliknow/podcatcher/PodcastActivity.java
	src/net/alliknow/podcatcher/ShowEpisodeListActivity.java
	src/net/alliknow/podcatcher/view/fragments/EpisodeListFragment.java
Let podcast load fail on select all and authorization required