Upgraded Bootstrap and FontAwesome
Downgrade to Bootstrap 2.1.1 because of popover problems.

Also enforce html rendering of popovers.
Added favicon
Added player rating evolution chart on the daily league page.
Externalized the strings for the new chart.

This fixes #32
Only build with JDK6 on Travis.

Don't need to support the other JDK versions yet.
Merge pull request #33 from frankbille/master

Release 1.4