Cask files are Emacs Lisp files
Remove obsolete dep to git-commit-mode
Code style
Remove obsolete markdown module
Extract Helm support into a separate module
[Fix #399] Extract key-chord into a separate module
Fix a reference to nrepl.el
Merge remote-tracking branch 'prelude/master'

* prelude/master:
  Fix a reference to nrepl.el
  [Fix #399] Extract key-chord into a separate module
  Extract Helm support into a separate module
  Remove obsolete markdown module
  Code style
  Remove obsolete dep to git-commit-mode
  Cask files are Emacs Lisp files

Conflicts:
	core/prelude-packages.el
Clean code