Maven: remove gwt-dev dependency

Note this in the pom.xml:
Apparently, pulling in gwt-dev is a bad thing to do.
The compiler states: [WARNING] Don't declare gwt-dev as a project dependency.
This may introduce complex dependency conflicts
Remove seemingly spurious bits from pom.xml

IntelliJ warns that these aren't legal
Toy draggable shapes using Raphael and jsPlumb

Demonstrating how we might draw shapes in a WebProtege portlet.
This combines the JavaScript libraries Raphael (via raphaelgwt)
which generates SVG shapes, and jsPlumb which makes them
draggable and draws self-adjusting arrows between them.
Disable dashed box around draggable objects