chat page: no more off-topic channel

Author: pushcx

app/views/home/chat.html.erb

@@ -64,8 +64,9 @@
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   <p>
-  Occasionally off-topic discussion (<em>especially American politics</em>)
-  spills over into <a href="irc://irc.freenode.net/lobsters-boil">#lobsters-boil</a>.
+  Lobsters used to have an off-topic channel for off-topic conversations (especially American politics) that boiled in over the main channel called #lobsters-boil.
+  It was useful in the wake of some big events, but the mods <a href="https://en.wikipedia.org/wiki/Abilene_paradox">didn't want to run it indefinitely</a>.
+  Community members independently run ##crustaceans and ##hommers on Freenode subject to their own policies, if you're looking for off-topic discussion.
   </p>
 
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