Introduce new looks

[Altai-man]

Depends on https://github.com/lizmat/App-IRC-Log/pull/8

This introduces new shiny look for the website.

What's missing / TODO:

• [x] Calendar colors
• [x] Proper anchoring
• [ ] Run button condition and code
• [ ] Check button
• [ ] "Archived" channels being hidden
• [ ] Better sorting for the home page
• [ ] Pagination on search page
• [x] A brave soul can extract all the copy-pasta code into template subroutines (I am not brave enough for this)

A proper 404 behaviour, but this can/should go in a separate PR.

[Altai-man]

Hmm, while I was working on all this live page code diverged quite a lot. :(