Add reference files to database after download

Fixes #392
Adding new column to the raw_data table
rename qiita_ware run.py
add new processing function and add to handler. Fix #420
Adding support to the Raw data object to retrieve the preprocessing status
Fix #421 and Fix #419
Adding failure callback function to ParallelWrapper
Adding callback to the
... study preprocessor so it sets RawData status to failure. And modify it to not create a clean up node
Adding the if statement for blocking back
Merge branch 'master' of https://github.com/biocore/qiita into add_ref_to_db-issue-392

Conflicts:
	qiita_db/environment_manager.py
Removing unused functions
rename test file
Fix #424
remove init on RunAnalysis
Merge pull request #422 from antgonza/issue_421

Fix #421 and Fix #419
Merge pull request #426 from antgonza/issue_424

Fix #424
Merge pull request #395 from adamrp/add_ref_to_db-issue-392

Add reference files to database after download
Merge pull request #428 from squirrelo/issue-420

Issue 420
Solving merge conflicts and addressing comments