New offlineimap setup for linux

* etc/emacs/common/50gpg.el (epa-file): Ask emacs to cache the passphrase.

* etc/emacs/linux/50gnus.el (gnus): Use regular in-emacs smtp bindings for now.

* etc/everything-else/linux/offlineimaprc: New file, no passwords here!
Update menu for ubuntu stuff

* etc/stumpwm/common/50keys.lisp (*app-menu*): Update menu to ubuntu stuff.
Add js-mode/flymake/js-hint integration
Add cmucl and lein
Micro tweaks
Simplify holy-startup.el to replace ~/.emacs completely
Start a recent emacs on stumpwm