minor style tweaks.
main section shadow
Reworked activity feed on main page.

Show more detail about WRs
Group updates by WR.
  ^ bug - haven't figured out how to associate commits with their WR yet.
Include user avatars (still a big hack, should feed off directory wiki).
CSS: commit message p->pre
Include jenkins git commits for now.
Collapse long updates to one line by default.
More avatars, better single/multiline styling.
Updated graph backgrounds for new style.
Merge branch 'styling'

Revamped activity page; it now groups updates by WR and includes avatars.