Remove M-O keybinding

It interfered with the Terminal's handling of arrow keys.

This fixes #343.
Map Option to Super and Fn to Hyper

More keybinding options is never a bad thing.
Add prefix arg to prelude-smart-open-line

With a prefix arg the command will invoke prelude-smart-open-line-above
Replace electric-indent-mode and paredit with smartparens
Ops :-)
Merge branch 'master' of https://github.com/bbatsov/prelude into dev

Conflicts:
	core/prelude-editor.el
	modules/prelude-lisp.el