Removing P1 from the 'Edit' menu

[Richard Fairhurst]

The current layout of the Edit menu appears, from anecdotal evidence, to 
lead to newbies selecting Potlatch 1 - probably because it's the first 
item on the list.

There are those who like to use Potlatch 1 for its undelete capabilities 
and because they're used to its workflow, but it's not something we 
should be encouraging. I'd therefore suggest we remove it from the Edit 
menu; those who want to use it can either mung the URL or temporarily 
set it as their preferred editor.

I think the following patch will do it, but don't have a working Rails 
port so am unable to check:

	http://pastebin.com/EXgShyz0

cheers
Richard