For some reason the JS never got loaded when it was in it's own
file, therefor I moved it into the HTML where it gets called.
Also when a session id on the server was expired or something, you
weren't able to log out, there is now code which fixes that.
There was no feedback on any login errors when a user provided a
wrong url, username, password or a disabled API. This commit
adds feedback to the user in this cases.
Fixes#15
As one of the first steps to offline capability we download all
images and put them into the JSON stirng and into the content
as data-uris for <img>-tags. This way you can go offline and keep
enjoying pictures in your feeds, at least untill you restart
FeedTheMonkey for now.
