Remove editor button if unavailable.

[brianmcmichael]

If the editor has not been configured, remove the button from the view.

[ericfranz]

A simple way to do this:

Add a class to the body tag "editor" and then do something like editor_btn { display: hidden; } body.editor editor_btn { display: block; }.

The class is added to the body in the template if the option is enabled / available. Similar thing for #111

[brianmcmichael]

fixed by https://github.com/OSC/cloudcmd/pull/32