Open html in firefox.
Add offlineimap config.
Setup mutt for local mail.
Simplify naming scheme.

All files beginning with a dot are now linked, aside from the git repo
files and the "." and ".." special files. This makes it easier to edit
the files because their extensions will be correct.

Also, I removed the vundle submodule because submodules suck. I changed
the setup script to just do a normal clone of vundle, or a git pull if
it exists.
Add/remove desktop menu entries.