Add Minecraft colours to .mcping, add sk89q issue lookup

mcping
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Comparison:

![In minecraft](http://i.imm.io/Zel1.png)

![In IRC](http://i.imm.io/ZelK.png)

youtrack
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Autoresponds to WORLDEDIT-XXXX, WORLDGUARD-XXXX, CRAFTBOOK-XXXX and CMDBOOK-XXXX with a link and description of the issue. Inspired by Bukkit's issue description bot.

Merging #53