Merge branch 'appframework-master' into vcategories_public

lib/appframework/controller/controller.php

lib/appframework/http/request.php

lib/base.php

lib/cache.php

lib/cache/broker.php

lib/cache/file.php

lib/cache/fileglobal.php

lib/cache/fileglobalgc.php

lib/cache/usercache.php

lib/filechunking.php

lib/legacy/cache.php

lib/public/icache.php

lib/public/irequest.php

lib/public/iservercontainer.php

lib/public/isession.php

lib/server.php

lib/session/session.php

tests/lib/appframework/controller/ControllerTest.php

tests/lib/cache.php

tests/lib/cache/file.php