R1:94f6b6ca4e69

Fix every HTML issue I could find

Summary:
I attempted to test every interface. I probably missed some stuff, but I at least have some level of confidence that the `phutil_tag` branch is fairly stable.

Fixed these issues:

[1] Fixed a Herald issue with object links in transcripts. Some actions return
links; this was previously hard-coded.
[2] DarkConsole refactoring created an issue where the "`" event handler registered too many times.
[3] Fixed a bug where `strlen($value)` was being checked, but fields…