use SSL on freenode + add Mozilla IRC

Mozilla irc
----------------
For rust-lang :)

SSL on freenode
----------------
Changed connecting port to 7000 for SSL enabled connection. Now
all working fine. Had not realized I'd been connecting unencrypted up
til this point :O
add #rust on Mozilla as autojoin
add nick default to Mozilla server join
whitespace formatting to make channels config clearer
loads of nice changes