clubmember, racedb, racefile, raceresults updates, add agegrade

clubmember - normalize Clubmember on csvfile, add XlClubmember,
DbClubmember superclasses

racedb - various updated supporting race result accumulation

racefile - fix exception type from excel2dt

raceresults - fix time conversion
snapshot after runningclub created

moved agegrade, clubmember, racedb, racefile, raceresults to runningclub
package