Running inspection to make variables final

Conflicts:
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/NavbarCollapseButton.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/ValueBoxBase.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/base/button/AbstractButton.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/gwt/FlowPanel.java