[Rough Sketch] Differential ObjectItemView Smexyness

Summary:
Tried out `PhabricatorObjectItemView` for Differential. It looks smexy and smooth.

Refs T2014

- Title and Date as Maniphest
- Author in the handle icon
- Bar color reflects revision status (Needs Review, Accepted, Abandoned etc.) @chad looking for non-blue is faster than keeping watch for everything that's not "Closed" in old table form
- Some status information are in footer icons; currently only stale/old status display as well as saved drafts, maybe more in future; these come into my mind:
  - No reviewer warning
  - Push Blocking Priority (T2730)
  - Trivial, fast review guaranteed
  - Sketch / Just looking for advice/help
  - Arcanist Project (T2614)
  - Denote "Public Send-in" (T1476)

{F37662}
{F37663}
{F37664}
{F37665}

Some flaws:

- Date and reviewers on every entry the same?
- No respect for Differential fields (for some reason, every entry appeared the same, so broke it to parts)
- Plenty of (potential) increase in height - advise reducing paging length from 100 to 50 - or just ignore me

Suggestions for the future:

- Expand the meta information regarding revisions; e.g. the various status displays above
- Uh... T2543, T1279, T793, T731 and what else I want for Differential, because they are awesome!
- T793 should be in particular easy appearance-wise, just copy-paste from Maniphest

Test Plan: By looking at it, of course. Verified there are no errors or crashed

Reviewers: epriestley, chad, btrahan, liguobig

Reviewed By: chad

CC: aran, Korvin, edward, nh

Maniphest Tasks: T2014

Differential Revision: https://secure.phabricator.com/D5451

Conflicts:
	src/__celerity_resource_map__.php