Merge pull request #22 from brosander/PDI-8831

PDI-8831 - Modified JfaceMenuitem to keep track of its ActionContributio...
[BISERVER-9162] -- Updated gwt buttons to parse pen:classname
[BISERVER-9162] -- Modifieed GwtImage to accept stylenames under pen:classname attribute
Merge pull request #23 from krivera-pentaho/dev

Dev