Added date validation for list results API and improve documentation of params#2319

alexjustesen merged 12 commits intomainalexjustesen/speedtest-tracker:mainfrom

2318-feature-api-add-the-ability-to-request-only-a-specific-time-range-of-resultsalexjustesen/speedtest-tracker:2318-feature-api-add-the-ability-to-request-only-a-specific-time-range-of-resultsCopy head branch name to clipboard