Sort ghost children correctly in Phriction

Summary:
Currently, if some page /x/ has a grandchild at /x/y/z/ but /x/y/ does not exist, we insert a ghost entry for it in the "Document Hierarchy". However, we don't sort the hierarchy properly after inserting ghosts, so they always appear at the bottom and in an unuseful order.

Instead, sort children again after any ghost insertions.

Test Plan: Created /x/a/, /y/a/, /z/a/, verified ghosts sorted incorrectly before this patch and correctly afterward.

Reviewers: btrahan, vrana

Reviewed By: vrana

CC: aran

Maniphest Tasks: T1750

Differential Revision: https://secure.phabricator.com/D3418
Display 'away until' in owners and revision comment

Summary: It would be best to add this everywhere at once but I'm too lazy for it.

Test Plan: Displayed package list and detail and revision comment with away users.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D3419
Fall back to LDAP search attribute if username attribute is not configured

Summary:
See discussion in D3340. Some configurations set only a search attribute because their records are indexed by username (this is probably not quite the correct LDAP terminology). Other configurations use one attribute to search and a different attribute to select usernames.

After D3340, installs which set only a search attribute broke. Instead, fall back to the search attribute if no username attribute is present.

Test Plan: Successfully logged in on my test slapd.

Reviewers: yunake, voldern, briancline

Reviewed By: voldern

CC: aran

Differential Revision: https://secure.phabricator.com/D3406
Add redirect to HTTPS option

Summary: Rehash of D3411. In cgi/fcgi setups we have no idea if the request is HTTP or HTTPS as far as I can tell, so make this config-triggered again. Also handle @vrana's "off" case.

Test Plan: Set this flag, observed redirect to https when `$_SERVER['HTTPS']` was absent.

Reviewers: nh, vrana

Reviewed By: nh

CC: aran

Differential Revision: https://secure.phabricator.com/D3420
Try literal search if operator search fails in elasticsearch

Test Plan: Searched for `[test]` in /search/ and in revision dependencies.

Reviewers: epriestley

Reviewed By: epriestley

CC: tbrzezinsky, aran, Korvin

Maniphest Tasks: T1757

Differential Revision: https://secure.phabricator.com/D3427
Display 'away date' in blame

Summary: I've done D3432 in the hope that it will fix also this...

Test Plan: Blamed sporadic author.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D3433
Set viewer for all handles loaded in controllers

Summary:
I've replaced all `id(new PhabricatorObjectHandleData(...))->loadHandles()` by `$this->loadViewerHandles(...)`.
Lint caught one usage in a static method.

Test Plan: Displayed revision with sporadic author.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D3432
Allow linking unit tests

Summary:
We have lots of info about unit tests.
This allows linking them from Unit field.

Test Plan: Monkey patched `$test['link']`, clicked on it.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D3434
Merge branch 'master' of http://github.com/facebook/phabricator