Upgrade to Scalate 1.6.1 and Scala 2.10.0

git-svn-id: https://svn.apache.org/repos/asf/servicemix/website/trunk@1441455 13f79535-47bb-0310-9956-ffa450edef68
Upgrade some Maven plugins

git-svn-id: https://svn.apache.org/repos/asf/servicemix/website/trunk@1441456 13f79535-47bb-0310-9956-ffa450edef68
Add information about the upcoming 4.5.0 release

git-svn-id: https://svn.apache.org/repos/asf/servicemix/website/trunk@1441457 13f79535-47bb-0310-9956-ffa450edef68