Reduced feed and folder title's maximum width in the sidebar.

In chrome the scrollbar for the sidebar is wider than in the Firefox I normally use. I realized that if the scrollbar is visible and a folder has "999+" in the unread entries badge, the badge "jumps down" to the next line.

Reducing the folder title width a bit avoids this. I haven't seen the same happening with folders, but I guess it could happen so the change has been aplied to them too.
Moved data initialization to as soon as possible during an acceptance test.

I'm getting an elusive failure on folders_spec.rb acceptance test. I think it's a timing problem: sometimes the test runs so fast that it opens the page before the data is actually written to the database; the result is that some folders that should be visible don't appear in the view.

By moving database initialization to as soon as possible during test setup I hope the test will pass more often. Hopefully always!