luna-webappmanager: bump SRCREV

* use new extended version which should include all features from a recent webapp-launcher
  version

Signed-off-by: Simon Busch <morphis@gravedo.de>
webos-ports.inc: select luna-webappmanager as our webappmanager implementation

Signed-off-by: Simon Busch <morphis@gravedo.de>
luna-appmanager: bump SRCREV

* add support for our new webappmanager implementation

Signed-off-by: Simon Busch <morphis@gravedo.de>
webos_webapp_plugin.bbclass: depend on the correct webappmanager provider

Signed-off-by: Simon Busch <morphis@gravedo.de>