Add a top level data navigation to the dashboard screen

[wernerdaehn]

[SIP] Add a top level data navigation to the dashboard screen

Motivation

The user does have a dashboard showing data based on the FLIGHTS table. One chart shows the delays, one the number of flights, on the sum of flight time, the plan model used.
It would be natural to navigate within the data: How does the dashboard look when limiting to the current year? Flights that departed during business hours? Impact on holidays?
By providing a top navigation on the dashboard also (see here for charts) this can be achieved nicely.

Proposed Change

1. Add a top navigation area to the dashboard. Everything that is filtered here impacts the filters applied within each chart.
2. In the dashboard filters between charts can have relationships. Chart1 might be based on TABLE1 and chart2 on TABLE2 but TABLE1.START_DATE should be TABLE2.CREATE_DATE. This way with a single top level selector both filters, although on different tables, can be selected at once.

Please let me know if you are interested and I would spend some time to work out the details.