pages: move irc related pages under /irc

Redirects are hopefully set properly

pages/irc/bot.markdown

@@ -1,8 +1,9 @@
 ---
 layout: page
-permalink: /bot.html
+permalink: /irc/bot.html
 sitemap: false
 excerpt: "A little about my IRC bot. Useful links, why it doesn't reply to me, how to make it recognize me, what does it actually do?"
+redirect_from: /bot.html
 ---
 
 *Please read also [rules of my channels.](https://mikaela.info/channel.html)*

pages/irc/channel.fi.markdown

@@ -1,9 +1,11 @@
 ---
 layout: page
-permalink: /channel.fi.html
+permalink: /irc/channel.fi.html
 sitemap: false
 excerpt: "IRC-kanavieni säännöt. Lyhyesti: Käytä maalaisjärkeä, ole kiva, ei syrjintää, ei julkisia lokeja, älä tuo botteja ilman lupaa. Kiitos ♥"
-redirect_from: /kanava.html
+redirect_from: 
+  - /kanava.html
+  - /channel.fi.html
 ---
 
 **[In English](channel.html)**

pages/irc/channel.markdown

@@ -1,9 +1,11 @@
 ---
 layout: page
-permalink: /channel.html
+permalink: /irc/channel.html
 sitemap: false
 excerpt: "Rules of my IRC channel. TL;DR: Use common sense, be nice, no discrimination, no public logging, don't bring bots without permission. Thanks ♥"
-redirect_from: /channel.en.html
+redirect_from:
+  - /channel.en.html
+  - /irc/channel.en.html
 ---
 
 **[Suomeksi](channel.fi.html)**

pages/irc/chat.markdown

@@ -1,9 +1,11 @@
 ---
 layout: page
-permalink: /chat.html
+permalink: /irc/chat.html
 title: "Chat"
 excerpt: "Webchat of my IRC channel."
-redirect_from: /webchat.html
+redirect_from:
+  - /webchat.html
+  - /irc/webchat.html
 ---
 
 <!-- You must (usually) be registered to freenode IRC network for joining the