Archive Should Unsticky Topics

[macmanx]

While dealing with #2794 we attempted to remove it by Archiving it (as there are no front-end Unsticky options on reviews, because there's no front-end Sticky option on reviews either).

The result was something like a phantom review still stickied to every forum.

To simplify things, it would be cool if Archive also Unstickied things, since there's not much use to an archived-but-still-sticky topic.

[SergeyBiryukov]

In 5620:

Support Forums: Unstick topics on archiving.

Fixes #2795.

[SergeyBiryukov]

In 5729:

Support Forums: Remove 'Stick' link for non-public topics.

See #2795.

[SergeyBiryukov]

In 5730:

Support Forums: Unstick compat stickies on archiving.

See #2795.

[SergeyBiryukov]

In 5731:

Support Forums: When archiving a compat topic, make sure it's removed from super stickies list.

See #2795.

[SergeyBiryukov]

In 5732:

Support Forums: Before removing a compat sticky, check if the term exists.

See #2795.

[SergeyBiryukov]

In 5734:

Support Forums: After [5729], replace bbp_is_topic_public() check with in_array(), as the function doesn't exist in bbPress 2.5.x.

See #2795.

[SergeyBiryukov]

In 5749:

Support Forums: Amend [5729] to make sure plugin/theme authors and contributors still have the 'Stick' link when appropriate.

See #2795.