Make selection and list scrolling work better

Conflicts:
	src/net/alliknow/podcatcher/EpisodeListActivity.java
	src/net/alliknow/podcatcher/PodcastActivity.java
	src/net/alliknow/podcatcher/view/fragments/EpisodeFragment.java
	src/net/alliknow/podcatcher/view/fragments/EpisodeListFragment.java