added a generic interface to handle all types of events with a simple
interface : eventName and handler. On anyJqmWidget you can do
:addJQMEventHandler( String eventName  ,JQMEventHandler handler);
The use of this arose when trying to change a callback form "tap" to
"vclick" .I had to add this functionality to jqm4gwt and recompile
jqm4gwt then recompile my project instead of changing from "tap" to
"vclick" in my project.
Merge remote-tracking branch 'andrei_local/master'
Merge pull request #69 from ovidiubuligan/master

added a generic interface to handle all types of JQM events with a common method in JQMWidget