Improve PolicyFilter and PolicyQuery

Summary:
  - Allow PolicyQuery to require specific sets of capabilities other than "CAN_VIEW", like edit, etc. The default set is "view".
  - Add some convenience methods to PolicyFilter to test for capabilities.

Test Plan: Viewed pastes, projects, etc. Used other stuff in future diff.

Reviewers: vrana, btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D3212
Add View, Edit and Join policies to PhabricatorProject

Summary:
  - In ProjectQuery, always load the viewer's membership in the project because we need it to perform a CAN_VIEW test.
  - Add storage for the view, edit and join policies.
  - A user can always view a project if they are a member.
  - A user can always join a project if they can edit it.
  - Editing a project requires both "view" and "edit" permissions, and edit does not imply view.
  - This has no effect on the application yet.

Test Plan: See next diff.

Reviewers: vrana, btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D3219
Add project join/leave tests

Summary: Add test coverage for joining and leaving projects.

Test Plan: Ran tests.

Reviewers: vrana, btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D3220
Reverse project paging order

Summary:
Currently, we're showing projets in reverse order (Z..A) because most cursor pagers go from high IDs to low IDs.

Allow sequence to be reversed; reverse it.

Also simplify some query/paging stuff.

Test Plan: Set page size to 1, paged back and forth.

Reviewers: vrana, btrahan

Reviewed By: vrana

CC: aran

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D3221
Add basic support for new navigation menu

Summary:
Add a new left-side application menu. This menu shows which application you're in and provides a quick way to get to other applications.

On desktops, menus are always shown but the app menu can be collapsed to be very small.

On tablets, navigation buttons allow you to choose between the menus and the content.

On phones, navigation buttons allow you to choose between the app menu, the local menu, and the content.

This needs some code and UI cleanup, but has no effect yet so I think it's okay to land as-is, I'll clean it up a bit as I start integrating it. I want to play around with it a bit and see if it's good/useful or horrible anyway.

Test Plan: Will include screenshots.

Reviewers: vrana, btrahan, chad

Reviewed By: btrahan

CC: aran, alanh

Maniphest Tasks: T1569

Differential Revision: https://secure.phabricator.com/D3223
Minor, did not intend to land this actively quite yet.
Use phutil_utf8_convert() in Phabricator

Summary: See D3252.

Test Plan: This one is nasty to test, I'm going to make some coffee first.

Reviewers: davidreuss, vrana, btrahan

Reviewed By: davidreuss

CC: aran

Maniphest Tasks: T452

Differential Revision: https://secure.phabricator.com/D3254
Convert to custom encoding for diffusion blame views

Summary:
If a repository is configured with a custom encoding, it wasn't respected by DiffusionGitFileContentQuery making all views with
non-UTF8 characters fail. Check if we have a custom encoding and encode if any it set.

NOTE: This only works for Git repositories.

Test Plan: Browsed a repository with custom encoding before and after this patch.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Maniphest Tasks: T452

Differential Revision: https://secure.phabricator.com/D3251
configuration
settings
Switch off test plan
Turn down taskmaster now that the instance has less power.
Minimalized response to emails.
More downtuning of emails.
Fix reviewer listing; unset re-prefix; increase patch inline limit
Decent context for comments...
More trimming of emails.
Config patches for diffusion
First part of unified diff inclusion.
Intermediate state, next spike.