See https://gitlab.com/gitlab-org/gitlab-ce/issues/30423

This commit adds the frontend functionality to add the parameters
via the `pushState` api, preventing the need for a page reload.

Updated i18n strings and changed the
monitoring service graph data params

Added the logic to allow the start and end dates to be created

The performance dashboards will now display the data
from a set amount of time windows that are defined
on a constants file

Render both usage and capacity in chart

Moved shared date & time formats into constants