remove refs to esb from jbds product (intro content, themes, wizards, etc.)

In JBDS trunk [1], I've moved ESB refs in ./features/com.jboss.jbds.product.feature/feature.xml and ./site/site.xml to ./features/com.jboss.jbds.product.soa.feature/feature.xml and ./soa-site/site.xml, but other refs persist.

[1] http://svn.jboss.org/repos/devstudio/trunk/product/

These references should be removed and dealt with as downstream extensions, etc.

• • [3] ./plugins/com.jboss.jbds.product/themes/jbds/html/internal-page.css **
    515-a#new_struts_project:hover img { background-image : url('../graphics/icons/ctool/new_struts_project_hov.png'); width : 48px; height : 48px; }

    516-
    517:a#new_esb_project img

    { background-image : url('../graphics/icons/ctool/new_generic_project.png'); width : 48px; height : 48px; }

    518:a#new_esb_project:hover img

    { background-image : url('../graphics/icons/ctool/new_generic_project_hov.png'); width : 48px; height : 48px; }

    519-
    520-a#new_teiid_project img

    { background-image : url('../graphics/icons/ctool/new_generic_project.png'); width : 48px; height : 48px; }

• • [4] ./plugins/com.jboss.jbds.product/intro4/introContent.xml **
    398- <group>
    399- <link style-id="content-link" label="$introLink3Title-createnew$"
    400: url="http://org.eclipse.ui.intro/runAction?pluginId=com.jboss.jbds.product&class=com.jboss.jbds.product.intro.action.RunWizardIntroURLAction&wizardPluginId=org.jboss.tools.esb.project.ui&wizardId=JBoss.ESB.Project.Wizard"
    401: id="new_esb_project">
    402- <text>$introLink3Description-createnew$</text>
    403- </link>