Fix rendering of editor email address

Noted in https://jira.transvar.org/browse/REL-40

See screenshots in REL-40.

3) Adding a new Editor is possible only if the new editor has previously logged into Appstore. (Not sure if this was the requirement, just commenting to bring it to notice)

• Shamika Gajanan Kulkarni - this is expected functionality, but is a usability flaw. The "add editor" feature should indicate to the user that an editor must already have logged into App Store at least once

4) If the email address of an editor is long, it goes out of the box and looks weird.

• This should be fixed if possible.

Shamika Gajanan Kulkarni