Well I want to give visual feedback to the user that the field is not
mean for editing. I think this works fine, but we can wait for Amos to
confirm :-) @abedari

Setting the background explicitly to a gray color does not sound right.
There is a disabled bootstrap css class but it does disable the field
too, so it's no change.

We also disable/enable other fields in the submit functions, so I feel
this is the right solution.

Rebasing now.

-- 
Later,

 Lukas "lzap" Zapletal
 irc: lzap #theforeman