add ErrorCodes in dataBaseModel( backEnd)
Merge branch 'iter1' of https://github.com/CS169-Virtual-Fitting-Room/VirtualFittingRoom into iter1
Revert "Merge branch 'iter1' of https://github.com/CS169-Virtual-Fitting-Room/VirtualFittingRoom into iter1"

This reverts commit bacb18cf58a21c0447ac3affef4960c5358a1e8c, reversing
changes made to 3caa692e6487564e5b640f182dc91366aeaa3aec.
Revert bacb18c..f497c5a

This rolls back to commit bacb18cf58a21c0447ac3affef4960c5358a1e8c.
skip it again
Merge branch 'iter1' of https://github.com/CS169-Virtual-Fitting-Room/VirtualFittingRoom into iter1

Conflicts:
	db.sqlite3
	main/dataBaseModel.py