Reorganized de-widgets project structure.
This is a combination of attempting to match GWT best practices and maintaining a self-consistency of all de-webapp modules.
Renamed Models and corresponding views for app wizard
Merge branch 'gxt3-sandbox' of
https://github.com/iPlantCollaborativeOpenSource/de-widgets-module into
gxt3-sandbox

Conflicts:
	pom.xml
	src/main/java/org/iplantc/core/client/widgets/appWizard/view/AppWizardView.ui.xml
	src/main/java/org/iplantc/core/widgets/client/I18N.java
	src/main/java/org/iplantc/core/widgets/client/WidgetDisplayStrings.java
	src/main/java/org/iplantc/core/widgets/client/appWizard/view/AppWizardPanel.ui.xml
	src/main/java/org/iplantc/core/widgets/client/appWizard/view/AppWizardView.ui.xml
	src/main/java/org/iplantc/core/widgets/client/appWizard/view/AppWizardViewImpl.java