Fixed Issue #133 - Extended DeviceSize to have the different sizes and fixed the HasResponsiveness interface to use DeviceSize to make it easier.

Conflicts:
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/ButtonToolBar.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/Divider.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/DropDownHeader.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/IconStack.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/Image.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/InputGroup.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/ListItem.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/Modal.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/ModalBody.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/ModalFooter.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/ModalHeader.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/NavbarCollapse.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/NavbarCollapseButton.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/NavbarHeader.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/NavbarText.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/base/AbstractButtonGroup.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/base/AbstractListItem.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/base/AbstractTextWidget.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/base/ComplexWidget.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/base/ValueBoxBase.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/base/button/Caret.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/base/form/FormElementContainer.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/gwt/CellTable.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/gwt/DataGrid.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/gwt/FlowPanel.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/gwt/HTMLPanel.java