removed Errai helloworld qs

Conflicts:
	helloworld-errai/README.md
	helloworld-errai/functional-tests/pom.xml
	helloworld-errai/pom.xml
fixed helloworld-gwt qs
Removed uses of deprecated jQueryMobile APIs.

* Replaced use of $.mobile.changePage with pagecontainer's change event.
* Replaced use of data-role="content" with ui-content class.
* Replaced use of data-role="fieldcontain" with ui-field-contain class.
* Replaced use of data-role="content" with ui-content class.
* Replaced the filter extension with the Filterable widget.

Also replaced button markup for anchor tags with CSS classes.
Upgrade to GWT 2.6.1
updated WFK and EAP BOMS to 6.2.2.GA and 2.6.0-build-1 versions
Update CONTRIBUTING.md

Correcting the fork link for DEVELOPER-410
https://issues.jboss.org/browse/WFK2-613 removed also remaining files in helloworld-errai
https://issues.jboss.org/browse/WFK2-640 Fix bug involving saving of contacts
added Super Dev Mode options into GWT module descriptor and added an appropriate description into README.md file
WFK2-653: Remove text and link to obsolete tutorials
JDF-714 Removed redundant jQuery 1.9.1 artifact
JDF-725 shrinkwrap-resolver example uses deprecated method of SWR
WFK2-659: Fixed instantiation of HelloSpringResource in LocatingResource
WFK2-660: ResteasySpringTest extended to cover all the available URIs
Remove reference to obsolete tutorials
[JDF-721] - Fix minification profile settings in contacts-mobile-basic QS.
[WFK2-661] - Add links to the various demonstration paths in the spring-resteasy QS.
WFK2-641 Corrected iOS7 statusbar color
WFK2-633 Fix jQueryMobile header and footer positioning issue.

This workaround ensures that when user focus moves away from input
fields, text areas or select widgets, the browser is forced to
scroll the page, which ensures that the browser repositions any
misplaced elements.
WFK2-644 Add CSS reset for overflow rules.

This ensures that overflow-x and overflow-y rules are reset,
ensuring that the vertical scrollbar is visible when necessary.