gschema: move "org.gnome.nm-applet.gschema.xml" from network-manager-applet to libnma
The schema is also used by "src/nma-ws/nma-eap.c" (formerly "src/wireless-security/eap-method.c") and g-c-c's "panels/network/wireless-security/eap-method.c".
That means, despite the name of the scheme, it really belongs to libnma.
Add it.
gnome-control-center#881 (closed)
TODO: if this gets accepted, a similar patch is necessary for network-manager-applet project to drop the gschema file.