Rename `PhutilRemarkupRule` subclasses

Summary: Ref T5655. Depends on D9993.

Test Plan: See D9993.

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley, Korvin

Maniphest Tasks: T5655

Differential Revision: https://secure.phabricator.com/D9994
Recognize Maniphest task description as a remarkup block

Summary:
Ref T4589. We don't recognize task descriptions as remarkup blocks, so `{F...}` references in them do not get attached to the objects, and thus no policy exemption is created.

Recognize them, which activates `{F...}` and `@mentions`.

We probably have a few more of these in other applications, but it's not a big deal to clean them up as they arise.

Test Plan: Uploaded a file to a task in the description field, saw it attach and get a policy exemption.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T4589

Differential Revision: https://secure.phabricator.com/D10139
Write a "resign" audit relationship even if actor has no relationship

Summary: Ref T4896. I got this logic slightly wrong when porting it over: we always want to write this relationship, to allow members of a project with an audit request against a commit to resign and get it out of their queue.

Test Plan:
  - Resigned from a commit with an existing relationship.
  - Resigned from a commit with no existing relationship, saw one added.

Reviewers: btrahan, joshuaspence, mbishopim3

Reviewed By: mbishopim3

Subscribers: epriestley

Maniphest Tasks: T4896

Differential Revision: https://secure.phabricator.com/D10137
Use standard infrastructure to attach commits to other objects

Summary:
Ref T4896. Now that we have a transaction editor, we can delete a giant block of hacks.

I believe this also resolves the commit/task attachment issues @joshuaspence and @mbishopim3 mentioned.

Test Plan: Attached and detached commits and tasks.

Reviewers: btrahan, joshuaspence, mbishopim3

Reviewed By: mbishopim3

Subscribers: mbishopim3, epriestley, joshuaspence

Maniphest Tasks: T4896

Differential Revision: https://secure.phabricator.com/D10138
Add an explicit temporary token management page to Settings

Summary:
Ref T5506. This makes it easier to understand and manage temporary tokens.

Eventually this could be more user-friendly, since it's relatively difficult to understand what this screen means. My short-term goal is just to make the next change easier to implement and test.

The next diff will close a small security weakness: if you change your email address, password reset links which were sent to the old address are still valid. Although an attacker would need substantial access to exploit this (essentially, it would just make it easier for them to re-compromise an already compromised account), it's a bit surprising. In the next diff, email address changes will invalidate outstanding password reset links.

Test Plan:
  - Viewed outstanding tokens.
  - Added tokens to the list by making "Forgot your password?" requests.
  - Revoked tokens individually.
  - Revoked all tokens.
  - Tried to use a revoked token.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T5506

Differential Revision: https://secure.phabricator.com/D10133
Invalidate outstanding password reset links when users adjust email addresses

Summary:
Fixes T5506. Depends on D10133. When users remove an email address or change their primary email address, invalidate any outstanding password reset links.

This is a very small security risk, but the current behavior is somewhat surprising, and an attacker could sit on a reset link for up to 24 hours and then use it to re-compromise an account.

Test Plan:
  - Changed primary address and removed addreses.
  - Verified these actions invalidated outstanding one-time login temporary tokens.
  - Tried to use revoked reset links.
  - Revoked normally from new UI panel.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T5506

Differential Revision: https://secure.phabricator.com/D10134
Terminate other sessions on credential changes

Summary:
Fixes T5509. Currently, existing sessions live on even if you change your password.

Over the course of the program, we've recieved a lot of HackerOne reports that sessions do not terminate when users change their passwords. I hold that this isn't a security vulnerability: users can explicitly manage sessions, and this is more general and more powerful than tying session termination to password resets. In particular, many installs do not use a password provider at all (and no researcher has reported this in a general, application-aware way that discusses multiple authentication providers).

That said, dealing with these false positives is vaguely time consuming, and the "expected" behavior isn't bad for users, so just align behavior with researcher expectations: when passwords are changed, providers are removed, or multi-factor authentication is added to an account, terminate all other active login sessions.

Test Plan:
  - Using two browsers, established multiple login sessions.
  - In one browser, changed account password. Saw session terminate and logout in the second browser.
  - In one browser, removed an authentication provider. Saw session terminate and logout in the second browser.
  - In one browser, added MFA. Saw session terminate and logout in the second browser.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T5509

Differential Revision: https://secure.phabricator.com/D10135
Make the current session key a component of the CSRF token

Summary: Fixes T5510. This purely reduces false positives from HackerOne: we currently rotate CSRF tokens, but do not bind them explicitly to specific sessions. Doing so has no real security benefit and may make some session rotation changes more difficult down the line, but researchers routinely report it. Just conform to expectations since the expected behavior isn't bad and this is less work for us than dealing with false positives.

Test Plan:
  - With two browsers logged in under the same user, verified I was issued different CSRF tokens.
  - Verified the token from one browser did not work in the other browser's session.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T5510

Differential Revision: https://secure.phabricator.com/D10136
Normalize project slugs before querying for them

Summary:
Fixes T5728. In particular:

  - `/tag/XYZ/` now works as an alias for `/tag/xyz/`.
  - `arc todo --project ASDF` now works as an alias for `arc todo --project asdf`.

Test Plan: Called `project.query` and visited `/tag/LBHABLHBH/`.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: aklapper, epriestley

Maniphest Tasks: T5728

Differential Revision: https://secure.phabricator.com/D10144
Merge remote-tracking branch 'origin/master' into r4nt-staging