[Dashboard] Set the displayed zoom for the chart by strat


On the dashboard, the chart with the timeline and the buy/sell points by strategy is a really great functionality!

However, after 1 week, it’s already less useful and 1 month later, almost totally useless, unfortunately : The timeline and the chart are too much compacted and it’s almost impossible to see the tendency for the last day for example.
With a high frequency bot, it’s even impossible to see anything else but the buy/sell dots.

If we could choose what the timeline displays (default zoom scale), it would be really awesome: something like last day / week / month / all … It would be then possible to see what is really happening on all the strats, the tendency for all bots, at a glance.

Ideally, this param should be global for the default with the possibility to set it up on each strat