IDE-700 work-in-progress

- switched several bundles to require sapphire 0.7.0
- added more support for dynamic elements model
IDE-1039

    Fixed the covert to liferay project menu enabled when right click on the non-SDK-folder project and looking into the Liferay menu.
Updated new 6.2.0 dtd/xsd files.
IDE-700

- added structures content handler
- re-enabled sapphire content includes in portletXmlEditor
- Fixed NPE in LiferayTomcatServerBehavior