R1:eca7dc25f20b

Use javelin_tag(), not phutil_tag(), to render revision blame tooltips properly

Summary: Depends on D19310. Ref T13105. The "meta" value was not populating correctly because this used `phutil_tag()`.

Test Plan: Will verify on `secure`.

Maniphest Tasks: T13105

Differential Revision: https://secure.phabricator.com/D19311