gateone.py:  The new --combine_js option will now take settings into account and will only include JavaScript from enabled applications and plugins.
gateone.js:  GateOne.Utils.getNode() now uses memoization to improve performance.  Related to this, GateOne.Utils.removeElement() will remove elements from the memoization cache (GateOne.Utils._nodeCache) when they're removed from the page so they can be garbage collected.
Playback plugin:  Exporting the current session now works again.  A few bugs related to the new scroll wheel functionality have also been fixed in the template (copied same fixes to the Logging plugin's playback template as well).
Playback plugin:  Fixed a bug where you'd get an exception trying to render 256_colors.css when in debug mode.
Logging plugin:  Fixed the same 256-color but as in the Playback plugin.
gateone.css:  Removed most of the tag selectors leaving just "html, body".  They just weren't necessary.  Corresponding to this I had to add a few extra things to the themese (h1-h6, specifically) to make up for it.  This should make panels appear better/more consistently when embedding Gate One.
Themes:  A few little tweaks here and there.
Bookmarks plugin:  Finished tweaking it to remove the use of {{prefix}} in the CSS.