#93 - intermediate commit
#93 - Code review
#93 - Merge remote-tracking branch 'origin/GH93-icons-side-bar'

Conflicts:
	org.flowerplatform.flex_client.core/src/org/flowerplatform/flex_client/core/CorePlugin.as
	org.flowerplatform.flex_client.core/src/org/flowerplatform/flex_client/core/editor/DiagramEditorFrontend.as