Added method to get structure file from a list of files
Added DOCUMENT_EXTENSION config var
Added parallel preprocessing of files
Implemented Log and Project association
Project-Logger relationship is bidirectional
Fixed merging issues, logger tests passing
Mocked out process_files in views.py
DocumentParser tests passing
All unit tests passing
Updated run_pipeline for new launching way
Trying to fix circular import, pipeline does not work
Merge branch 'removing-readerwriter' of github.com:Wordseer/wordseer_flask into connecting-preprocessor

Conflicts:
	tests/testcollectionprocessor.py
	tests/testlogger.py
Removed debug code and fixed unit tests.
Renamed run_pipeline, updated it
Fixed import error in uploader views
Added logging to app/__init__.py
Merge branch 'removing-readerwriter' of github.com:Wordseer/wordseer_flask into connecting-preprocessor

Conflicts:
	app/preprocessor/collectionprocessor.py
Debugging processing issues when processing from the front end
Merge branch 'removing-readerwriter' of github.com:Wordseer/wordseer_flask into connecting-preprocessor

Conflicts:
	tests/testdocumentparser.py
Merge branch 'connecting-preprocessor' of github.com:Wordseer/wordseer_flask into connecting-preprocessor