swap scrollbar side; chasecar disabled on desktops
added telemetry graph; only availabe on desktops

* telemetry graph is a plot of altitude, and any addtional
  numeric data for the payload
* only available for payloads
* plot spans over the whole flight
* plot can be zoomed by making a selection using click&drag
* double click will reset zoom/selection
* mouseover will display values at the specific time
* graph starts collapsed and can be made visisble using a button
  at the lower left corner of the map