* initial version of the role mapping create form
[marvel](https://marvelapp.com/prototype/f0e8fih/screen/72042619)
* fixed format
* changed to typeahead
* format
* group by
* review fixes
* added group and divider
* change name to realm name
* refactors form field help
* format and test
* add interpolation of help text
* implement HelpItem and move help text
* update DownloadDialog with new HelpItem
* remove commented out code