Nightmode cleanup

Removed 99% of layout-altering styles and some minor tweaks
Nightmode cleanup v2

9 less !importants + misc changes
basic support for multiple links in a user tag
use URLs for user tagger link names
now with 2x more pizzazz
open all user tag links with the 'open' link
now with double the fun
reduce the verbosity of creating html for user tag links
Fix duplicate imgur gifv expando
Allow links like this one `https://imgur.com/r/eal/abcdef` to be expanded.
cleanup
cleanup
accountSwitcher.findMatchingAccount (by username)
commandLine "sw" uses accountSwitcher.findMatchingAccount
open account switcher prefs if commandLine 'sw' can't find a matching username
move commandLine "sw"(itch accounts) into account switcher
Merge pull request #1866 from andytuba/acctswitch-cmdline

Account Switcher Command Line fix ups
Merge pull request #1864 from CelestialWalrus/patch-1

Image expandos for https://imgur.com/r/foo/bar
Merge pull request #1861 from Shraymonks/fix-gifv-expando

Fix duplicate imgur gifv expando
Merge pull request #1851 from erikdesjardins/tag-multiple-link

Multiple links in a user tag
Merge branch 'master' of git://github.com/gavin19/Reddit-Enhancement-Suite into 1834

Conflicts:
	lib/modules/nightmode.css