add checking for the empty source when adding claim, fix the related rspec
i dont know why it is not working
check whether the source is pointed to actual card when adding claim
Merge remote-tracking branch 'wagn/master' into check_empty_source_when_adding_claim
Merge remote-tracking branch 'wagn/master' into check_empty_source_when_adding_claim
fix source checking in claim and related rspec
simplify and remove unnecessary checking
Merge remote-tracking branch 'henry/check_empty_source_when_adding_claim'