Merge pull request #429 from ssushma/dev-branch

Width is not required, as usernames will fit automatically based on length
Fixed: [My Collections - Collaborators] - Clicking on Click here to start working together from the collaborator email doesn't display login popup
Merge pull request #430 from anilgooru/dev-branch

Fixed: [My Collections - Collaborators] - Clicking on Click here to star...
width for username on firefox issue resolved.