BUGFIX Issue #511: Allow dynamically changing eTag property

git-svn-id: http://crux-framework.googlecode.com/svn@5800 a5d2bbaa-053c-11de-b17c-0f1ef23b492c
BUGFIX Issue #569: Method event.stopPropagation doesn't work in Image component from Crux Widgets

git-svn-id: http://crux-framework.googlecode.com/svn@5801 a5d2bbaa-053c-11de-b17c-0f1ef23b492c