fix bug 1082749 - prefetch a few related fields in the document and revision feeds to lower number of queries.
fix bug 1082796 - use correct icon for GitHub account on edit profile page.
Merge pull request #2830 from jezdez/bug1082796

fix bug 1082796 - use correct icon for GitHub account on edit profile page.
Merge pull request #2829 from jezdez/bug1082749

fix bug 1082749 - prefetch a few related fields in the document and revision feeds to lower number of queries.
Fix bug 926319: Make homepage search box white
Merge pull request #2833 from openjck/926319-white-search-box

Fix bug 926319: Make homepage search box white