Let LayerStore::loadRawData fire a load event.
Let LayerStore::loadRawData fire a load event.

The method `loadRawData` of the LayerStore would throw a `load`-
event in Ext 4.1.3, while version 4.2.1 removes this behaviour.

We therefore overwrite loadRawData and again throw the event just
as Ext did previously.

See also the APIdocs and the links mentioned there.

marcjansen/geoext2,annarieger/geoext2,bentrm/geoext2,geographika/geoext2,geographika/geoext2,chrismayer/geoext2,annarieger/geoext2,m-click/geoext2,geoext/geoext2,chrismayer/geoext2,Sundsvallskommun/geoext2,marcjansen/geoext2,geoext/geoext2,m-click/geoext2,Sundsvallskommun/geoext2,Sundsvallskommun/geoext2,bentrm/geoext2