JBIDE-16294 JQuery Mobile 1.4 data-* content assist
JBIDE-16322 Add an option to generate a menu in New JQM Panel wizard

Option is added with item number/label/url editor
as in new Listview wizard.
Test is added.
JBIDE-16339 Generate new content in New Dialog wizards for JQM 1.4

Content generation in New Dialog wizard is modified.
Icon list is made dependent on version.
Redundunt class TwoColumns in wizard page implementation is removed.
JBIDE-16294 Added data-dialog="true" attribute to Dialog
JBIDE-16348 Add data-role="tabs" to content assist