Add help for debugger views

Protege supports the user with help icon for many views which opens a browser page with detailed information of this view.

Clicking on the help icon highlighted above opens an information webpage of Protege's online documentation for the Object Property Hierarchy.

It would be nice to have this feature implemented also for the Interactive Ontology Debugger. The webpages containing the information might be implemented on this Wiki.

Technical detail: no implementation is necessary for this but only a configuration entry in the plugin.xml:

<!-- Object property views -->

    <extension id="OWLObjectPropertyTree" point="org.protege.editor.core.application.ViewComponent">
        <label value="Object property hierarchy"/>
        <class value="org.protege.editor.owl.ui.view.objectproperty.OWLObjectPropertyHierarchyViewComponent"/>
        <headerColor value="@org.protege.objectpropertycolor"/>
        <category value="@org.protege.objectpropertycategory"/>
        <navigates value="@org.protege.objectpropertycategory"/>
        <help value="http://protegeproject.github.io/protege/views/object-property-hierarchy"/>
    </extension>