[i3] Better battery symbols for status bar
[i3] Volume data updates

  * Use ponymix
  * Use a different symbol for muted
[i3] Use a symbol for loadavg data
[i3] Show wifi signal strength bar
[bin] Add script for convenient tmux launching
[bin] Add script for displaying emoji clock
[bin] Add script for "fixing" unicode files
[bin] Add script for starting i3lock
[mutt] Add mailfilter, convert mail dates for mutt
[bin] Add screens script to setup monitors
[bin] Add script for taking a screenshot
[zsh] Add aliases
[zsh] Update zsh_vars

 * Only set variables on first run
 * Separate X related vars
[i3] Update i3 bar config
[xbindkeys] Use ponymix for volume control
[ncmpcpp] Add ncmpcpp config and key bindings