Pass keyname instead of translated string

This introduces the single stat chart component aside from
the area chart component

Also added a finally clause to the getGraphsDataWithTime promise

In order for the dashboard component not to fail, the feature flag
is now required by default

Updated i18n strings and changed the
monitoring service graph data params

Also added relevant tests that make use of a stubbed feature flag,
prettified files

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