[Backport to 11.1] Validation error when adding a new folder in document perspective

Please note that I was only able to reproduce this issue twice out of approximately 20 times, so some effort might be needed to reproduce.

Steps to reproduce (using cargo.run on gogreen and Chrome browser)

• login CMS (as author)
• open document perspective
• click Hippo Go Green folder
• right-mouse and select "Add new translated folder"
• Type in F in Name input field
• Hit ENTER
  Expected:
  Modal window closes and a folder named F is created as child of Hippo Go Green folder
  Actual:
  Alert panel is displayed with the text "Error to validate input names". See screenshot.

Work-around: ignore the warning and click OK.

Logging with stack-trace:
16.04.2015 10:31:40 ERROR [org.hippoecm.frontend.plugins.standardworkflow.validators.AddDocumentValidator.validate():69] validation error
javax.jcr.RepositoryException: Failed to resolve path relative to node /content/documents/hippogogreen
at org.apache.jackrabbit.core.NodeImpl.resolveRelativePath(NodeImpl.java:240)
at org.apache.jackrabbit.core.NodeImpl.resolveRelativeNodePath(NodeImpl.java:223)
at org.apache.jackrabbit.core.NodeImpl.hasNode(NodeImpl.java:2281)
at org.hippoecm.repository.decorating.NodeDecorator.hasNode(NodeDecorator.java:299)
at org.hippoecm.frontend.plugins.standardworkflow.validators.AddDocumentValidator.validate(AddDocumentValidator.java:61)
at org.apache.wicket.markup.html.form.validation.FormValidatorAdapter.validate(FormValidatorAdapter.java:55)
at org.apache.wicket.markup.html.form.Form.validateFormValidator(Form.java:1993)
at org.apache.wicket.markup.html.form.Form.validateFormValidators(Form.java:2006)
at org.apache.wicket.markup.html.form.Form.validate(Form.java:1861)
at org.apache.wicket.markup.html.form.Form.process(Form.java:921)
at org.hippoecm.frontend.dialog.AbstractDialog.process(AbstractDialog.java:668)
at org.apache.wicket.markup.html.form.Form.onFormSubmitted(Form.java:784)
at org.apache.wicket.ajax.form.AjaxFormSubmitBehavior.onEvent(AjaxFormSubmitBehavior.java:171)
at org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:146)
at org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:633)
at sun.reflect.GeneratedMethodAccessor190.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.wicket.RequestListenerInterface.internalInvoke(RequestListenerInterface.java:258)
at org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:241)
at org.apache.wicket.core.request.handler.ListenerInterfaceRequestHandler.invokeListener(ListenerInterfaceRequestHandler.java:250)
at org.apache.wicket.core.request.handler.ListenerInterfaceRequestHandler.respond(ListenerInterfaceRequestHandler.java:236)
at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:890)
at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:261)
at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:218)
at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:289)
at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:259)
at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:201)
at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:282)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.hippoecm.frontend.plugins.login.ConcurrentLoginFilter.doFilter(ConcurrentLoginFilter.java:54)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.__invoke(StandardContextValve.java:106)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.__invoke(StandardHostValve.java:142)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1517)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1474)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.jackrabbit.spi.commons.conversion.MalformedPathException: empty path
at org.hippoecm.repository.jackrabbit.HippoPathParser.parse(HippoPathParser.java:219)
at org.hippoecm.repository.jackrabbit.HippoPathParser.parse(HippoPathParser.java:177)
at org.hippoecm.repository.jackrabbit.HippoPathParser.parse(HippoPathParser.java:149)
at org.hippoecm.repository.jackrabbit.HippoPathParser.parse(HippoPathParser.java:68)
at org.hippoecm.repository.jackrabbit.HippoCachingPathResolver.getQPath(HippoCachingPathResolver.java:53)
at org.hippoecm.repository.jackrabbit.HippoNamePathResolver.getQPath(HippoNamePathResolver.java:61)
at org.apache.jackrabbit.core.SessionImpl.getQPath(SessionImpl.java:652)
at org.apache.jackrabbit.core.session.SessionContext.getQPath(SessionContext.java:338)
at org.apache.jackrabbit.core.NodeImpl.resolveRelativePath(NodeImpl.java:238)
... 53 more