Mongo/TinyMongo Integration

[lockefox]

For parallel containers, a shared cache is desired.

• Switch all TinyDB connections to tinymongo ones
• Add pymongo connection
• Default to tiny if/when db connection fails

[lockefox]

• add mongo credentials to scripts/app.cfg (don't forget #SECRET for github)
• add pymongo connection builder to create_app() in __init__.py
• Make mongo handle global in config.py
• switch existing tinyDB connections for *mongo ones
• add db_close() func to avoid test issues on windows machines

[lockefox]

Progress made with #6 adds mongo capability to API key library

[lockefox]

Update connect/query to use with rather than open/query/close