Custom translators and resource-adapters are not correctly supported

If user added a custom translator and resource-adapter to the server, they should be able to use them in Designer using Teiid Connection importer.

• Currently it seems like Teiid connection importer only works with known types that are hard coded with names. This restriction must be removed, should work with any resource-adapter that is added to Teiid system

• The class-name property is available with data source template properties, so default value for this must be selected from the provided list of properties. This must not be hard coded for any resource-adapters.

• Most every resource-adapter property comes with a small description, so we must show the description when the property is hi-lighted in the wizard.