Increase maximum file size to 200 MB
Add extension validator
Add extension validation
Clear any existing errors before extension validation
Save uploaded files to upload dir
Fix #57. Fix #36. Store uploaded files.
Add test for task hssp stockholm from pdb
Add upper case tests also to unit tests (make Jon happy). #50. 669a130ad7ae53fc6931834f9845f72c19d89788
Add filetype instructions to tour (#36 #57)
Create upload folder
Adapt api to factory changes (#62)

The dashboard and api share the same code for processing a request. The api
endpoint also uses the form to validate the input.

This commit is non-backwards compatible. The api now requires that file data
be sent in a parameter name 'file_'.
Update api docs
Merge branch 'files' into develop