PXD-340 ⁃ form submission not handling numbers properly

[frickjack]

From @cgmeyer

minor problem with using the form though:
when you enter an integer for, e.g., 4 for “number_of_melanomas_in_family”. when you click “upload submission json from form” it puts quotes around it (edited)
and then says it’s not an integer :

See also uc-cdis/sheepdog#95 - if we patch sheepdog, then we can close this ...

[cgmeyer]

Form submission also adds quotes to booleans (true -> "true") which leads to the error:
"message": "'true' is not of type 'boolean'",
"type": "INVALID_VALUE"