Fix "Show All Changes" button in Diffusion

Summary: See IRC. We currently render a "show all changes" button for commits which have more than 100 but fewer than 1000 changes, but it doesn't actually do anything. Make it do what it's supposed to.

Test Plan: Set the limit to 2; clicked the button.

Reviewers: chad, staticshock, btrahan

Reviewed By: chad

CC: aran

Differential Revision: https://secure.phabricator.com/D6900
Alert user that projects/ is protected in Phriction

Summary: Fixes T3447 - adds check if slug is projects/ alerts user

Test Plan: Create new doc in Phriction. Type projects/whatever and get error

Reviewers: epriestley

Reviewed By: epriestley

CC: Korvin, aran

Maniphest Tasks: T3447

Differential Revision: https://secure.phabricator.com/D6901
Fix extra divs in PHUIBoxView

Summary: This moves the outer classes to the outmost div

Test Plan: Reviewed a few PHUIBox pages

Reviewers: epriestley

Reviewed By: epriestley

CC: Korvin, aran

Differential Revision: https://secure.phabricator.com/D6902
Add a "before" parameter to feed.query

Summary: See IRC. We already have "after", add the corresponding "before". This makes polling for updates much easier.

Test Plan: Ran queries with "before" and "after".

Reviewers: chad, btrahan

Reviewed By: chad

CC: aran

Differential Revision: https://secure.phabricator.com/D6903
Move Workboards to PHUI

Summary: This is just renaming to PHUI (I like shorter text :)

Test Plan: reload workboard examples page, seems to not fatal and looks very appealing

Reviewers: epriestley

Reviewed By: epriestley

CC: Korvin, aran

Differential Revision: https://secure.phabricator.com/D6904
Color consolidation

Summary: Another pass at consolidating colors

Test Plan: Test various pages and UI elements

Reviewers: epriestley

Reviewed By: epriestley

CC: Korvin, aran

Differential Revision: https://secure.phabricator.com/D6905