Process MRIs on GAE

[stefpiatek]

Tags uses for MS-PINPOINT and prostate MRI projects.

fixes #368

Also some fixes during running:

• Need to add our services to no-proxy list for the REST requests to work
• use regex for manufacturer matching and move manufacturer overrides into separate subdir so that its easier to see that they're a different thing
• Refactored interation with database to be in the base uploader class, so that we don't have to remember to do this when we bring in a new data item (and we don't have to test it each time we do it)
• Tweaking of logging levels
• bit more removal of EHR
• simplified anon processing incoming data to have a top level try catch, so that we if there was a problem reading the data it'll discard
• series descriptions can be none, so allow for that

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 95.65217% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 80.61%. Comparing base (fc8e962) to head (7d004d0).

Files	Patch %	Lines
pixl_core/src/core/uploader/base.py	91.66%	1 Missing :warning:
...l_core/tests/project_config/test_project_config.py	85.71%	1 Missing :warning:
pixl_export/src/pixl_export/main.py	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #378 +/- ## ========================================== - Coverage 82.97% 80.61% -2.36% ========================================== Files 79 76 -3 Lines 3259 3085 -174 ========================================== - Hits 2704 2487 -217 - Misses 555 598 +43 ```

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[stefpiatek]

Looks good; nothing here is intended to hold up merging if you need to get it in today. I'm not able to give an opinion on the specific tags referenced here.

Thanks! I'll wait for a post-merge review from @HChughtai when he's back before we set off the final export for ms-pinpoint