UX refine for BookmarkBar.
UX refine for BookmarkBar.

1. adjust the font of title
2. fixed ellipsis appears when there are three or
   less english letter.


Former-commit-id: f479d7b422fcc72820064cf473c55357b7f66547
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser