Update Database so dates are as dates and not string

## Background
Currently, we do a lot of searches and filters based on time, but our time format in Menas is mainly string, which then disallows us from using Mongo optimizations for time based operations.

## Feature
Update Database so dates are as dates and not string

No file, test, or entry point is named. Start by locating Menas's database integration and the time fields currently stored as strings, then map the migration and query impact; done means dates are stored as database dates and time-based searches can use MongoDB optimizations.

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