add support for file based templates

Signed-off-by: Peter Lieven <pl@kamp.de>
add: KAMP_xajax_response::getJSON()

Signed-off-by: Peter Lieven <pl@kamp.de>
add: KAMP_xajax_response::addScriptCall()

Signed-off-by: Peter Lieven <pl@kamp.de>
add: KAMP_xajax::registerClass()

Signed-off-by: Peter Lieven <pl@kamp.de>
factor out memcache connector

Signed-off-by: Peter Lieven <pl@kamp.de>
KAMP_xajax_response: add support for removeClass and addClass

Signed-off-by: Peter Lieven <pl@kamp.de>
change namespace to KAMP

Signed-off-by: Peter Lieven <pl@kamp.de>
adding Rest(ler)Client

Signed-off-by: Peter Lieven <pl@kamp.de>