Added taxon menus.
Finished menu with destinations and things to do.

* Fixed some CSS mumbo-jumbo troubles with the hovering.
* Also split the menu styles into another file.

TODO?: Look for a better solution than adding a div around every li.
Finished login partial (with overlays and everything!) :)

* Some basic javascript added for overlay handling.
TODO: What's the best way to include .js from outside /vendor/assets?