JBIDE-14011 Formatting in Insert Tag wizard text preview.

Formatting is improved to use full width of the text widget, and to adjust at dialog resize.
JBIDE-13991 Definitions for JSP and HTML editor configurations (see in org.eclipse.wst.sse.ui.editorConfiguration) are outdated for WTP 3.5

Editor's configuration definitions were updated due to be consistent with the WTP 3.5 editors configuration.

	modified:   plugins/org.jboss.tools.jst.jsp/plugin.xml