[WFLY-490] only one <stylesheet> in <transformationSet> is possible
[WFLY-490] only one <stylesheet> in <transformationSet> is possible

jstourac/wildfly,99sono/wildfly,xasx/wildfly,jstourac/wildfly,99sono/wildfly,tadamski/wildfly,pferraro/wildfly,99sono/wildfly,golovnin/wildfly,xasx/wildfly,rhusar/wildfly,jstourac/wildfly,tomazzupan/wildfly,tomazzupan/wildfly,rhusar/wildfly,iweiss/wildfly,wildfly/wildfly,tadamski/wildfly,tomazzupan/wildfly,wildfly/wildfly,golovnin/wildfly,pferraro/wildfly,xasx/wildfly,iweiss/wildfly,wildfly/wildfly,rhusar/wildfly,golovnin/wildfly,tadamski/wildfly,wildfly/wildfly,jstourac/wildfly,pferraro/wildfly,iweiss/wildfly,rhusar/wildfly,iweiss/wildfly,pferraro/wildfly