Progress on base functionality.

Thumbnails in list now are AspectFit, not fill. Put in line separators
in list, and made titles multiline. Added context action "Comments"
which pushes to comments view (which doesnt display comments yet). When
select a item in the feed, opens webview straight to link if present
(picture, website), if not will push to comments. Settings view now
shows if saved user credentials are present, no need to relogin
everytime. Lists are no longer in reverse order.