Fix WidgetSet building

[glebfox]

• [x] The widgets configuration must strictly have validation-api version 1.0.0.GA
• [x] None other configurations except widgets must have ru.finam:slf4j-gwt dependency
• [x] Add ui-widgets dependency without explicit version
• [x] Rename cuba.web.widgetSetproperty to jmix.ui.widgetSet
• [x] Exclude second logger to prevent collisions with Logback