Add airline as a bundle

"Thanks for flying vim!"
Update tagbar by making it a submodule

Points to the latest HEAD on master, which is newer than what I had
Use powerline symbols in airline
Hide nicklist in weechat

Also, hide the user count in the status bar. Don't need to see how many there
are in 'real time'. If I do want to know how many there are, /nicks provides the
information.
function __is-my-window-focused: am I being looked at?

Uses xdotool & the environment variable $WINDOWID to check if the current
window is focused in X11. Returns 1 or 0.

Probably ends up being Konsole-specific, unless other terminal emulators also
include the WINDOWID variable?
Tabular settings for aligning ruby hashes
Delete NERDTree
Replace nerdcommenter with commentary
Delete command-t
Yay, all the textobjs!
a bunch of changes.

whoops, wasn't keeping up-to-date on my commits.
Merging the results from the new laptop with some old changes

Merge remote-tracking branch 'github/master' with old-laptop.

Conflicts:
	vim/bundle/tagbar -- Converted from submodule into a regular
                             subdirectory.