Allow using colon in Depends On

Test Plan: Used it.

Reviewers: epriestley

Reviewed By: epriestley

CC: tdrhq, aran, Korvin

Differential Revision: https://secure.phabricator.com/D6705
Remove actor as a follower from unowned Asana subtasks after touching them

Summary: Ref T2852. Asana adds the actor as a follower when they create a task, so subtasks currently have up to two followers (the actor and the reviewer) when they should have only one (the reviewer). Simply removing the actor is an effective remedy for this because unfollowing tasks occurs with sneaky ninja stealth in Asana and doesn't generate notifications or even transaction activity.

Test Plan: Synchronized a revision without this patch, saw two followers on the subtask. Synchronized a revision after this patch, saw the "removeFollowers" fire and only one follower on the subtask, with no record of the removal in notifications or the transaction log.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2852

Differential Revision: https://secure.phabricator.com/D6700
Support Twitch.tv as an OAuth provider

Summary:
This is mostly for personal reasons / lols, but they have a perfectly functional OAuth2 API and it takes like 15 minutes to add a provider now and I was in this code anyway...

@chad, we could use JIRA, Twitter and Twitch.tv auth icons if you have a chance.

Test Plan: {F53564}

Reviewers: btrahan, chad

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D6706
Conpherence - add dropdown menu

Summary: Fixes T3641. Probably needs some @chad love though on colors and what have you. Technique was to jam this into the existing notifications stuff as much as possible. I think its "okay" but if we were to add more stuff here (like a 3rd application) this could get a quality pass to consolidate even more code.

Test Plan: played with it in Chrome and Safari - looks reasonable

Reviewers: chad, epriestley

Reviewed By: epriestley

CC: aran, Korvin

Maniphest Tasks: T3641

Differential Revision: https://secure.phabricator.com/D6708
Implement macros search by flags.

Summary: Reuse the existing flags functionality for searching macros. Currently implemented as a simple select element (for color).

Test Plan: Flagged some macros and tried searching by them.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D6709