Adjust copy for adding additional members
Problem to solve
In the current UI, there's no way for a user to know they can add a user via an email address. The option to invite someone via email only appears after you enter their email address (see screenshots below). This question has also come up on stackoverflow. https://stackoverflow.com/questions/31908222/how-to-give-user-level-access-to-private-gitlab-repository
Solution
We should adjust the copy from "select members to invite" to be "GitLab member or Email address"
Edited by Sam Awezec