Revert "Replace autopair with smartparens."

This reverts commit bbc0a32b3768a830ac99cd75ebc4ab4fa8a39af3.
Don't let js2-mode override C-c C-f binding.
More js2-mode config.
Add js2-refactor.
Add flycheck-color-line-mode.
Merge branch 'master' of github.com:bodil/emacs.d

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Powerline + Nyan Cat.