Add support for XEP-0313: Messege Archive Management
I think it may be good idea to add support for "MAM:http://xmpp.org/extensions/xep-0313.html to MUC. It was already added for Message Archiving component to make it easier to retrieve older messages. MAM can be used with MUC for same reasons. After we add this implementation we would be able to use same protocol to communicate with both components.
Task #4732 - added support for XEP-0313: Message Archive Management to MUC history provider
Task #4732 - updated MySQL JDBC driver due to lack of support for precise timestamps