Malformed error message during import when a required attribute is missing

[bjohare]

Steps to reproduce the error

Create a new project and upload a questionnaire. Import a file in which an attribute required by the project schema is missing. The platform reports the error but the message is malformed:

Expected behavior

The error message should be formatted correctly.

[clash99]

I will take look at this from ui and also earlier layout question.

[bjohare]

@clash99 the malformed error is fixed in https://github.com/Cadasta/cadasta-platform/tree/regression/%23970

[clash99]

Brian fixed the error so I'm only making a few ui changes with this one. Related to #976, we should consider removing the first radio button question at that time and be able to deduct the value with the file type uploaded.