Removed more vim stuff

Obviously I'm not a hardcore geek
.cask -> Caskfile

`brew bundle` can now be used for casks as well.
Homebrew Cask has been moved to https://github.com/caskroom/homebrew-cask.
Removed .hushlogin

I don't mind seeing the connection info; reminds me where I'm connecting.
Mercurial. :-P
Don't rsync the .extra_template file to ~
Don't use vim, clear screen after quitting a man page