adjust ClassSummaryInfo class members and other related xml, classese with ClassSummaryInfo based on UI documnet
change Schedule member fields more easy to use
unified ClassDetailInfo, ClassSummaryInfo, FacilityInfo into ClassInfo
fix private members of the domain classes with juram
extract the package clss_detail_info because it's turned out to be used in package not only class_summary_info_inventory but also recommendation
make order_confirmation xml layout