create_hookup

PT#: 75024892
Added a form on the hookups/index view for creating a new hookup (e.g. remote pair programming event)
This form can be shown/hidden with control by a button using javascript.
Javascript is tested via Cucumber features.
this step is not very generic to be included in basic steps, because that's not the only way to disable a button (besides, what do you mean by disabled?)