Show Longer Branch Name in Web UI's "More ..." View

[isc-vgao]

Testing Steps:

1. In git-source-control repo, checkout longBranchName branch

git checkout longBranchName

2. Load git-source-control into the current namespace

zpm "load <path to local git-source-control repo>"

3. Create a new branch with a long name

git branch feature_chg0172358_abcdefghijkl123456789123
git push -u origin feature_chg0172358_abcdefghijkl123456789123

(enter passcode for deploy key if prompted)
4. In Management Portal Favorites section, open git-source-control UI
5. Under Remote Branches of left side navigation bar, click More ...
6. Verify that popup is wide enough to fully display the longest branch name.
7. Delete the branch you created in step 3

git push origin -d feature_chg0172358_abcdefghijkl123456789123

(enter passcode for deploy key if prompted)

git branch -d feature_chg0172358_abcdefghijkl123456789123

[isc-tleavitt]

This fixes #294