Added "GetFile" and "GetSubDirs" request handlers (wreqr) to ReportApp, and switched the "GetLookup" handler to use GetFile with some options preset.
Changed ReportApp to
a) fix sort checking,
b) split the sort string into parts, and
c) save the last set route so it can be used as defaults for the next time a route is set.
Changed the Dir model to parse the dirsLookup data.