plugins: compositor: use correct property name to fetch the window type

Signed-off-by: Simon Busch <morphis@gravedo.de>
Depend on LunaSysMgr being starting in order to have the application model populated

We're highly depending on some services provided by LunaSysMgr so it needs to be started
first before we can access it. Relying on ls2 service status subscription doesn't always
help here.

Signed-off-by: Simon Busch <morphis@gravedo.de>
Merge pull request #45 from webOS-ports/morphis/work

Morphis/work