* implementation of p3config, cache functionality to p3Qblog
* added peerid (pid) attribute to rsQblog item and its serialisation
* TODO: logical updating for p3Qblog
* TODO: implement tick() so can add to server
* TODO: test p3Qblog after addition of tick with some peers
git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@571 b45a01b8-16f6-495d-af2f-9b41ad6348cc