LogEntry.action_time expects a Django timezone object instead of a builtin datetime.
This fixes a runtime warning of the following kind:
RuntimeWarning: DateTimeField LogEntry.action_time received a naive datetime (2018-03-28 20:53:01.714173) while time zone support is active.
I've broken out the OCR-specific code from the consumers and dumped it
all into its own app, `paperless_tesseract`. This new app should serve
as a sample of how to create one's own consumer for different file
types.
Documentation for how to do this isn't ready yet, but for the impatient:
* Create a new app
* containing a `parsers.py` for your parser modelled after
`paperless_tesseract.parsers.RasterisedDocumentParser`
* containing a `signals.py` with a handler moddelled after
`paperless_tesseract.signals.ConsumerDeclaration`
* connect the signal handler to
`documents.signals.document_consumer_declaration` in
`your_app.apps`
* Install the app into Paperless by declaring
`PAPERLESS_INSTALLED_APPS=your_app`. Additional apps should be
separated with commas.
* Restart the consumer
* PEP8 conformity
* rename run_post_consume_external_script to run_post_consume_script
* rename run_pre_consume_external_script to run_pre_consume_script
* change order of declaration and use from post...pre to pre...post
