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.d/snippets/rjsx-mode/import-react

@@ -0,0 +1,5 @@
+# -*- mode: snippet -*-
+# name: Import React dependency (ES6)
+# key: ir
+# --
+import React from 'react'