Improve trading pairs linked TVL chart

[kenkunz]

Note

See #785 – consider doing the design these two tickets together, since the HUD and chart panel are interrelated (TVL panel data could be integrated into a single HUD).

Goal

As an investor analysing the historic performance of a given trading pair, I want the linked TVL chart (shown below the price OHLC chart) to be a panel of the primary chart (rather than a separate linked chart), so that it is easier to navigate and to view the correlated data.

Acceptance criteria

1. all data shown in current linked TVL chart is included in the new panel
2. information shown in the HUD is available in the new panel (or new combined HUD)
3. zooming and panning data in either panel (primary OHLC and secondary TVL) is linked and smooth
4. overall height of combined panel is reduced compared to current linked charts