id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc 156,tile update,Martin Kolman,Martin Kolman," * replace tiles by newer ones * timestamps * last modified time for files * timestamp for tiles in database * last modified in http headers * automatic update - download only headers and replace old tiles automatically * batch update - check & update all currently stored tiles ",enhancement,new,major,,gps,,,,mcepl@…