Removed equals method of EAdElement checking ids
instanceof in equals affects performance in GWT backend,
and the engine doesn't need it
Added some missing injectos for GWT
Converted some vardef into properties
Death refactor
Merge branch 'master' of github.com:e-ucm/eadventure

Conflicts:
	core/editor-core/src/main/java/es/eucm/ead/editor/model/nodes/SceneFactory.java
	core/editor-core/src/main/java/es/eucm/ead/editor/view/panel/ScenePanel.java