Updated the core gwt-material version to 1.5.0-SNAPHSOT
Updated the core gwt-material version to 1.5.0-SNAPHSOT

GwtMaterialDesign/gwt-material-demo,GwtMaterialDesign/gwt-material-demo,GwtMaterialDesign/gwt-material-demo,GwtMaterialDesign/gwt-material-demo