in Users and Authentication -> Roles -- new custom verbs/resources should also show up in dropdown list

[slickwarren]

when entering a custom verb or resource, the new item does not show up in the dropdown list. I would expect it to show up here. parent ticket

[richard-cox]

The Role Grant Resources tab shows two selects, one multi select (verbs) and one single select (resource). Both are marked as taggable. This request is to show the custom entry in the verbs drop down. The resources drop down might need reviewing as well, to show the typed entry in the drop down (the user is 'filtering' down to their entered text).

[richard-cox]

Related #2356