No warning message if file upload fails

[laceysanderson]

Currently if file upload fails for whatever reason when trying to create an instance, the form simply refreshes with no messages to the user and no instance created...

[laceysanderson]

This appears to be caused by trying to upload to large a FASTA file which in turn overloads the POST. Sometimes there is no message on submit of the form and sometimes you see

The tripal_jbrowse_mgmt_add_form_validate() does not even get triggered in this instance making this extremely difficult for us to catch...

[laceysanderson]

If you run into this, upload your file to the server and use the Path to file on server text field to specify the location.

[laceysanderson]

We should use the Tripal HTML5 file upload to get around this.