Longer and/or configurable data retention ranges

[ClementTsang]

Describe the feature request

Why should we consider this feature request? Describe why, and/or how you think this feature will solve the issue, or overall improve the application:

Allow for retaining (graph) data longer, as well as being able to view more data. Currently it's hard coded.

Additional context/details

Provide any additional context or details here. What needs to be done, why, etc: