Fix version range for Zipkin UI
Fix version range for Zipkin UI

Closes gh-216

snicoll/initializr,nevenc-pivotal/initializr,Arsene07/forge,bclozel/initializr,spring-io/initializr,Arsene07/forge,Arsene07/forge,gwidgets/gwt-project-generator,bclozel/initializr,nevenc-pivotal/initializr,gwidgets/gwt-project-generator,snicoll/initializr,Arsene07/forge,nevenc-pivotal/initializr,Arsene07/forge,bclozel/initializr,spring-io/initializr,spring-io/initializr,nevenc-pivotal/initializr,bclozel/initializr,nevenc-pivotal/initializr,gwidgets/gwt-project-generator,gwidgets/gwt-project-generator,bclozel/initializr,snicoll/initializr