Fixes on lp order deployment

[jeremyletang]

• Ensure all amends and create are being returned
• do not try to evaluate liquidity when submitting / cancelling an LP.

It fixes one thing: The order generated by liquidity where not done properly, but it was working, because we were re-validationg liquidity recursively when submitting / cancelling liquidity order.

so what was happeningwas:

• the engine was returning theorder to cancels
• the market was cancelling the orders
• by cancelling the order liquidity checks were triggered
• the liquidity check was re-creatingthe order as it was cancelled.
  Now the cancellation do not trigger a new liquidity check (which may be the cause of the panic)
  But the orders are properly cancelled / created thanks to the fix in the liquidity engine.