Massive configuration overhaul

Currently paying the price of months of non-diligent git usage.

Here's what has changed.

- Theming support in Gvcci and wpgtk
- Dropping support for i3
- Supporting EXWM
- Many Elisp modules
- Collapsed redundant directories in ./configs

configs/shared/emacs/.emacs.d/snippets/haskell-mode/derive-safe-copy

@@ -1,5 +0,0 @@
-# -*- mode: snippet -*-
-# name: Derive Safe Copy
-# key: dsc
-# --
-deriveSafeCopy 0 'base ''$1