Select which timezone to use

[davi5e]

There is a problem when the Laravel configuration uses UTC by default and the frontend displays data in some other timezone.

As a general rule, using UTC in the backend is fine due to a whole lot of integrations in the monitoring system, but the lack of option to adjust the filter accordingly causes problems when the records being shown include dates outside the selected range.

To be clear, if we consider all date/time in UTC, there is no bug! The problem resides in the fact all data is being displayed in UTC-4 and the filter selects data outside the intended range...