Add test for the readOnlyWidgets option of the workspace publish operation
Add selenium test for checking the behaviour of the interface when using read only widgets
Fix code style of TabMenuItems
Always add a remove option in the popup menu of tabs. Disable it when the tab cannot be removed
Fix Dragboard.hasReadOnlyIWidgets
Fix some problems in ParametrizedTextInputInterface.escapeValue
Cache usdl info
Add support for initialValue to ButtonGroupInputInterface
Add some sanity checks to the template parse code