Changes

* [https://bugzilla.mozilla.org/buglist.cgi?query_format=advanced&short_desc_type=anywordssubstr&short_desc=filter+junk+jmc+spam&product=MailNews+Core&product=Thunderbird&component=Account+Manager&component=Backend&component=Database&component=Filters&component=General&component=Mail+Window+Front+End&long_desc_type=anywordssubstr&long_desc=junk+jmc&resolution=---&bug_severity=blocker&bug_severity=critical&bug_severity=major&bug_severity=normal&bug_severity=minor&bug_severity=trivial&chfieldto=Now junk|jmc(junk management control)]