config: /images/analysisFiles requires auth

Otherwise we get this exception:

Caused by: groovy.lang.MissingPropertyException: No such property: username for class: java.lang.String
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:50)
        at org.codehaus.groovy.runtime.callsite.PojoMetaClassGetPropertySite.getProperty(PojoMetaClassGetPropertySite.java:35)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:227)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetPropertySafe(AbstractCallSite.java:333)
        at com.recomdata.transmart.rmodules.AnalysisFilesController.checkPermissions(AnalysisFilesController.groovy:78)
        at com.recomdata.transmart.rmodules.AnalysisFilesController.this$2$checkPermissions(AnalysisFilesController.groovy)
        at com.recomdata.transmart.rmodules.AnalysisFilesController$this$2$checkPermissions.callCurrent(Unknown Source)
        at com.recomdata.transmart.rmodules.AnalysisFilesController.download(AnalysisFilesController.groovy:21