Update board report: mention mailing list activity

git-svn-id: https://svn.apache.org/repos/asf/servicemix/website/trunk@1573600 13f79535-47bb-0310-9956-ffa450edef68
Add information about March bundles release

git-svn-id: https://svn.apache.org/repos/asf/servicemix/website/trunk@1575943 13f79535-47bb-0310-9956-ffa450edef68
Fix ServiceMix 5 download page - only ZIP assembly remains

git-svn-id: https://svn.apache.org/repos/asf/servicemix/website/trunk@1575944 13f79535-47bb-0310-9956-ffa450edef68