Add various plugins.

Replace VimClojure with vim-clojure-static.
Add pry snippet.
Fix vimrc/gvimrc edit mapping paths.
Add quickfix window close mapping.
Use spring for spec mappings by default.
Add and improve ctrlp mappings.
Fix cword Ag search not usings escaped keyword.
Add some clojure customizations and mappings.
Set up rainbow parens.
Update NERDTree to latest, use minimal UI.

Rebased my current file patch on it as well.
Add some clojure snippets.