Don't show the validation cell if there is no validation message
[Specs] add specs for not showing info row if there is no validation message
Change property to allFormCellsFlattened, as it's more descriptive. Publicize allFormCells method and make it the 2-d array
Remove unneceesary check - sending a message to nil just returns nil
Merge pull request #38 from benzguo/marklarr/validation_no_message

Don't show the validation row if there's no message to show