Highlight the current line in vim with a light grey background.
Fix highlight colors in vim.

Had to move below other loaded files.
Vim: wrap cursor on backspace/left/right in all modes.
Vim: handle Control+Shift cursors keys.
Have Homebrew Cask put apps in /Applications folder.
Emacs config: use file-readable-p instead of file-exists-p.
Vim: add keybinding (;) to start command-line mode.

This allows using either the default (:) or the easier-to-type (;)
option to go into command-line mode.

Suggested by http://nvie.com/posts/how-i-boosted-my-vim/.
Vim: use key names for control+shift cursor keys.

Turns out those keys do have name, we were just overriding them lower down.
Removed the conflicting keybindings that were used to switch viewports.