Move Env variables to .profile instead of .bashrc + emacs.desktop

See http://unix.stackexchange.com/questions/88201/whats-the-best-distro-shell-agnostic-way-to-set-environment-variables/88266#88266
Make the shortcut ec open in the terminal's background
Also move the autosave file to another directory
Initial configuration for i3
Personalize i3 a bit