Add support for CemetecMC/#cemetech-mc
Pass nick bot is talking to through more functions so it doesn't get lost and prevent nikkyai.replace_nicks() from working properly
Fix “more like” without arguments (broken due to whitespace issues)
Tone down random remark a bit--seems too talkative lately
Random remark changes:

* Eliminate spontaneous mimic and NikkySim remarks (they're
  still available via ‘mimic’ and ‘nikkysim’ commands)

* Don't do non-context remarks unless no preferred keywords
  exist in the input message
Correct some personality nick definitions (too-narrow patterns)