Re-implement one line stories.

Summary: This puts back the 'one line' story we previously had with the updated design.

Test Plan: Review my feed.

Reviewers: epriestley, btrahan

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D6666
Fix Maniphest fatal if attached tasks are not an array

Summary: Fixes T3678. I think some very old rows may have a junk value here. This will be obsoleted by ApplicationTransactions and other modernization, most likely, so just fix it locally.

Test Plan: looked at a task

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T3678

Differential Revision: https://secure.phabricator.com/D6677
Provide a more flexible script for administrative management of audits

Summary: Fixes T3679. This comes up every so often and the old script is extremely broad (nuke everything in a repository). Provide a more surgical tool.

Test Plan: Ran a bunch of variations of the script and they all seemed to work OK.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran, staticshock

Maniphest Tasks: T3679

Differential Revision: https://secure.phabricator.com/D6678
Partially generalize Remarkup previews and add support to Differential

Summary:
Ref T3671. A lot of applications have pretty ad-hoc preview code. Clean it up a bit and add Summary preview to Differential.

After ApplicationTransactions we might want to try to serialize the whole form and show a preview of all the transactions, but this seems not very useful in most cases (I'd guess that Remarkup previews are 99% of the value) and tricky to get right (e.g., adding images which don't exist yet to Pholio mocks).

I think I can add this in a few other places, too.

Test Plan:
Edited Maniphest Tasks and Differential Revisions, mashed some buttons. Verified previews rendered correctly. Grepped for removed CSS classes (no hits).

{F52907}

Reviewers: btrahan, Firehed

Reviewed By: btrahan

CC: aran, chad

Maniphest Tasks: T3671

Differential Revision: https://secure.phabricator.com/D6673
Use PHUIRemarkupPreviewPanel in Ponder

Summary:
Ref T3578. Ref T3671. Depends on D6673. Use `PHUIRemarkupPreviewPanel` (introduced in D6673) to provide question create/edit and answer edit previews in Ponder.

Then delete a million lines of duplicate code.

Test Plan: Edited a question; edited an answer. Saw live previews.

Reviewers: btrahan, Firehed

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T3578, T3671

Differential Revision: https://secure.phabricator.com/D6674
Add a "document" style to PHUIRemarkupPreviewPanel and use it in Legalpad and Phriction

Summary: Ref T3671. Depends on D6674. Continues work in D6673, D6674 and extends it into Legalpad and Phriction. Then deletes a bunch of dead code.

Test Plan: Edited documents in Legalpad and Phriction, verified I got reasonable looking previews.

Reviewers: btrahan, Firehed

Reviewed By: btrahan

CC: aran, chad

Maniphest Tasks: T3671

Differential Revision: https://secure.phabricator.com/D6675
Filter only possibly-tainted keys from superglobals

Summary: Ensures that weird behavior from filter_input_array does not remove keys from superglobals. Should fix T3677.

Test Plan:
Checked that $_SERVER contained same number of keys before and after
filtering, and that those affected by the original bug continue to be filtered
correctly.

Reviewers: epriestley, btrahan

Reviewed By: epriestley

CC: zorfling, aran, Korvin, wez

Maniphest Tasks: T3677

Differential Revision: https://secure.phabricator.com/D6680