add filter for active error tags (#2474)

* add filter for active error tags

* make filter backwards compatible

Fix race condition when loading Rapid editor (#2472)

Re-enable view challenge leaderboard link (#2465)

Bump to v3.15.11 (#2463)

fix feature animation and hover styles (#2440)

* fix feature animation and hover styles

Properly pin Rapid editor to 2.3 (#2437)

Bump to v3.15.10 (#2433)

Fix Rapid editor iframe changeset comment formatting (hotfix) (#2435)

When using the embedded Rapid editor, the default changeset comment
was malformed (spaces were being converted to '+' signs).

Bump to v3.15.9 (#2402)

* bump to v3.15.9

bump to v3.15.8 (#2379)