Ib 1m hist

[goodboy]

Super WIP, but a start at doing 1m long term (slow) chart alongside our classic 1s OHLC in the fast chart.

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TODO:

• [x] avoid throttle state condition that shows up with too many open data reset hack requests:

  • [x] use global (mutex) state var to support simultaneous contract queries (dabb9e8)

• [x] improving the the 1m loading algo to avoid slow waits on queries after 3 or 4 (completed and working well after dabb9e8) also)

  • [x] there's wip multi-task / don't wait for status even code already drafted

• [ ] actually a day (or more)'s worth of 1s day

• [ ] init support for right-click-to-load-1s as is also mentioned in #400

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maybe more to come?