Added AWE workflow for computing sequence stats on file and pushing the results into the Shock file attributes.
Added variables needed for Shock and AWE communication.
Added AWE workflow template for performing sequence stats computation on a file in a user inbox.
Added stats computation as inbox operation thru the API.  This is submitted as a workflow to AWE and the resulting stats information is entered as metadata into the Shock node attributes of the input file.  Fixed code to upload files to inbox with correct file name.
Merge pull request #570 from jaredbischof/develop

Added stats computation as inbox operation thru the API.