add Kappa emote
tweak buildPackages
simplify groupchat names, fix #379, more simplification is possible
reduce font size and space between chat lines
Revert "reduce font size and space between chat lines", use #386

This reverts commit 200c6d30e9d77be52de914b12d85adbef5358ef4.
reduce space between chat lines
Merge pull request #385 from dubslow/master

Simplify groupchat names