Update for new Uglifier options.
Bump Mousetrap version.
Switch Backbone and Underscore to submodules.
Bump jQuery hoverIntent library.

Switch it to a git submodule while we're at it.
Switch to Rob Garrison's fork of tablesorter.

Update CSSs and such.
Revert keyscss to last tagged release.
Update to jQuery v1.9.1.
Update tablesorter config for the new hotness.
Update CodeMirror library.