Ban Request - "Juha-Jarmo Heinonen" aka jammi

https://mojang.atlassian.net/secure/ViewProfile.jspa?name=jammi
started in MC-630 insulting moderators:
https://mojang.atlassian.net/browse/MC-630?focusedCommentId=35934&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-35934
https://mojang.atlassian.net/browse/MC-630?focusedCommentId=35976&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-35976

and even Mojang employees in MC-7255:
https://mojang.atlassian.net/browse/MC-7255?focusedCommentId=36921&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-36921