Changing links in McObot's issue update messages.

Issue #284 new
Anna Bakker created an issue

Currently the links in McObot's issue/code update messages use the code.minecraftonline format instead of http://bitbucket.org/minecraftonline

Since bit bucket is removing c names these should be changed.

Example: 09:43 <@McObot> (MCS) Issue: New trivial enhancement posted by Anna28: "Adding cocoa beans to auto planters [MCZ216]" - http://code.minecraftonline.com/craftbook-extra/issue/67

http://code.minecraftonline.com/craftbook-extra/issue/67 should be replaced with https://bitbucket.org/minecraftonline/craftbook-extra/issue/67