Format scripts on the BUR index page as dtext, the same way they're
formatted in forum posts. This means that tags have colors and underlines,
but they don't have post counts. Gathering post counts was too slow.
* Remove the single alias and implication request forms. From now
on, bulk update requests are the only way to request aliases or
implications.
* Remove the forum topic ID field from the bulk update request form.
Instead, to attach a BUR to an existing topic you go to the topic then
you click "Request alias/implication" at the top of the page.
* Update the bulk update request form to give better examples for the
script format and to explain the difference between aliases and
implications.
