jbrowse fixing processing of sequence only parameter
jbrowse fixing processing of sequence only parameter

maovt/p3_api,maovt/p3_api,maovt/p3_api,aswarren/p3_api,maovt/p3_api,PATRIC3/p3_api,aswarren/p3_api,PATRIC3/p3_api,maovt/p3_api,maovt/p3_api