Changing Firefox keybinding in Spectrwm.

The Firefox binding clashes with Janus Ack keybinding.
This change will put Firefox key next to Chrome key.
Adding Spectrwm keybinding for gvim.

Keybinding MOD+Shift+e (for editor) to gvim.
Stop starting gpg-agent in xinitrc.

Oh-My-Zsh pluging is handling gpg-agent and this was causing multiple
instances of gpg-agent to be run.  Plus xinitrc isn't really the
appropriate place for this.
Making wallpaper setting more portable.

Setting the wallpaper with feh in xinitrc shouldn't have filename coded.
I should in future just symlink the image I want to
~/Pictures/wallpapers/wallpaper.jpg
Changing Spectrwm bar font to Source Sans Pro.
Formatting clokc in Spectrwm bar.
Fixing gpg-agent.

The Oh-My-Zsh gpg-agent plugin has a bug in which a new daemon is
spawned for every terminal/shell opened.