Redirect Vichan-style Routes

[jaw-sh]

The following route styles need to be handled.

• /operate/catalog.html
• /operate/res/20692.html
• /operate/res/20692+50.html
• /operate/index.html
• /operate/2.html

Additionally, copypaste uses these for unique features.

• /_g/
• /_t/

/_g/ and /_t/ are text files. I'm not going to route those. He can upload them to public on his own and they should continue to exist. In the future, we can probably have a URI like /board/post/post_id for GPG signatures. /_t/ will remain as-is because it's not an imageboard feature.

[ctrlcctrlv]

The only unique directories are:
_g: GPG signed messages.
_t: Monthly ransparency messages.