Fix colors, spacing on list filters

Summary: so pixels, much color

Test Plan: reload audit/home, things are more aligneded

Reviewers: epriestley, btrahan

Reviewed By: epriestley

CC: Korvin, epriestley, aran

Differential Revision: https://secure.phabricator.com/D7947
Straighten out some crumbs and links for workboards

Summary: Ref T1344. Minor tweaks for crumb/link stuff -- @mikn has been doing some work here recently and I want to unblock him.

Test Plan: Viewed board; viewed column edit screen.

Reviewers: chad, btrahan

Reviewed By: chad

CC: mikn, aran

Maniphest Tasks: T1344

Differential Revision: https://secure.phabricator.com/D7937
Generate a default "Backlog" column for boards and put all tasks into it

Summary:
Ref T1344. Autogenerates a "Backlog" column if one does not exist. Assigns all tasks to the backlog column.

For now, this column is always called "Backlog", but we could let it be called other things later.

Test Plan: Loaded a project, got a backlog column, created some columns.

Reviewers: btrahan, chad

Reviewed By: chad

CC: aran

Maniphest Tasks: T1344

Differential Revision: https://secure.phabricator.com/D7938