Allow lab file submission / editing.
First pass at file logic.
Add "paired set" to dataset dataset_type enum
Merge pull request #397 from ENCODE-DCC/1772-paired-set-dataset-enum

Add "paired set" to dataset dataset_type enum
whitespace
make sample data fasta to avoid new schema requirements.
Fix file schema requirements; tests.
paired_with file_format must be fastq.
Merge pull request #399 from ENCODE-DCC/allow-lab-file-submission

Allow lab file submission / editing.
Update audit file tests.
Fix upgrade file tests
Merge pull request #398 from ENCODE-DCC/1768-fastq-dependecies

1768 fastq dependecies
Fix double slash replacement to use correct parts
Merge remote-tracking branch 'origin/master' into 1727-portal-jump