Vim: do not use NFA for regexpengine.

This fixes slow doxygen parsing when \b, \c… present in document.
+ vim-vinegar plugin.
Updated readme.
xmobarrc. Tweaks for desktop:

  * Added widgets for weather, volume & mpd.
  * Changed color of widget name for volume, weather & mpd.
  * Changed eth0 -> enp3s0.
Updated tmux-dashboard for desktop:

 * renamed window mplayer -> media.
 * show log of Xorg instead of daemon.
XMonad.hs: add mpv to list of floating clients.
Added config for rtorrent + hotkeys in xmonad.
Xinitrc: start leechcraft.
Add simple commands for converting audio files.
Use collectiongain for calculating replaygain