Update cfgs

Changes:
  emacs config (evil)
  xmodmap for rebinding ctrl to insert/normal
  disables urxvt scrollbar
  asoundrc to change default sound device
  vim syntax highlighting for prolog on extension .pl
  xinit for xflux and dropboxd
  scripts to poll brightness and dropbox status
  add dropbox status to xmobar
  add xrandr wrappers
  add nice aliases
  add unicode symbols to xmobar