Add topic.url to edit-topic-summary api

Change-Id: I09aa208005115bee5cd5bc3c5537c82ed4f296fa
Add close topic action for no-js support

Change-Id: I1aff514fcb9344b4ec519147428feed79be0e001
Merge "Add topic.url to edit-topic-summary api" into frontend-rewrite
Merge "Add close topic action for no-js support" into frontend-rewrite