Send a verification email on account registration.
Set parent_name on listings for deleted comments.
Replace empty_listing with add_child_listing.
edit_campaign: Don't use insert_table_rows to insert editor.
insert_table_rows: Operate on full html row.

Previously had been using lists of html cells.
Remove UserTableItem template hacks.
Wrapped: don't pass around attr parameter where it's not needed.
Styled: define template() to retrieve def from template.

This lets us stop passing around attr everywhere.
Delete unused Templated.call().
Fix render_nocache call in JSPreload.set_wrapped.
Fix PrefApps's use of deleted Templated.call().
Use regular keep_fn rules for organic links in spotlight.
Cleanup GET_random and use Link.keep_item.
Don't show "show replies" on profile pages.
POST_report:  Only allow recipients to report messages