~hyper -> super, caps -> escape

Remove the hyper key bindings, setting them purely to super.
After running pure Emacs with no leader bindings, I've found the use
of Ctrl+g/Escape really painful (as well as the use of Ctrl for
everything). I want to free the caps key (which was hyper) for use as escape.

XServer/.xprofile

@@ -1,4 +1,4 @@
 #!/usr/bin/env sh
-setxkbmap gb -option shift:both_capslock -option caps:none;
+setxkbmap gb -option shift:both_capslock -option caps:escape;
 xmodmap ~/.Xmodmap;
 [[ -f ~/.Xresources ]] && xrdb -merge -I$HOME ~/.Xresources;