Update Support Forums to bbPress 2.6

[dd32]

After close to 4 years of development, bbPress 2.6 has been released, and as of a few hours is running WordPress.org/support/

This ticket is to track any bugs and issues that surface as a result of the upgrade.

[dd32]

In 9270:

Support: Realign the headers of topics/replies after bbPress2.6 changed the underlying HTML.

See #4840.

[dd32]

In 9271:

Support: Bump cache after r9270.

See #4840.

[dd32]

Disabled the per-forum moderators functionality, since we're not yet using it, and we're running in back-compat mode which was causing an avalanche of queries on topic views.

Flipped the _bbp_allow_forum_mods option from 1 to 0.

Per-forum mods might be useful for the plugins section as @johnjamesjacoby said, but currently the plugins threads are in a single forum filtered by an attached taxonomy.

[dd32]

r9273 / r9274 @SergeyBiryukov

Support Theme: Restore correct line-height for the content area.

bbPress 2.6 sets line-height: 18px in the default styles, see [bb6743].

noting here for completeness.

[SergeyBiryukov]

In 9276:

Support Theme: Restore correct font-size and line-height for pagination links.

bbPress 2.6 sets font-size: 12px and line-height: 18px for them in the default styles, see ​[bb6743].

See #4840.

[SergeyBiryukov]

In 9277:

Support Theme: Bump CSS version for cache bust after [9276].

See #4840.

[dd32]

See also: r9301

Support: Disable entire-forum subscriptions (again).

bbPress 2.6 deprecated the previous function and no longer calls its filters.

This more complicated filter should hopefully have the same effect again.

See #4782.