Bulk plugin closure / re-open

[dd32]

Sometimes there's a need to close a set of plugins, doing it one-by-one can be time consuming.

The following Bulk actions currently exist:

• Reject

This aims to add these bulk actions to the list:

• Close
• Disable
• Open

[dd32]

In 12517:

Plugin Directory: Administration: Add bulk actions for close/disable/open.

This streamlines administration of cases where a large group of plugins need to be disabled or re-opened.

Fixes #6903.

[dd32]

In 12518:

Plugin Directory: When a plugin is closed/disabled, list the reason it's closed on the plugin list view.

See #6903.

[dd32]

In 12519:

Plugin Directory: Don't display 'unknown' close reason in the admin list, 'Closed' is enough.

See #6903, [12518].

[dd32]

In 12520:

Plugin Directory: Check for the bulk action nonce after we've verified this is the intended action.

The form uses GET requests and sends over action=-1 for innoculous things like search :( so this is hit for more code paths than just performing actions on the page.

Followup to [12517].
See #6903.