Redundant subscribe issue when route change

[Zkffkah]

When you switch ticker, like currently in ltc and click btc, there will be three history change trigger (btc -> ltc -> btc)and result in three resubscribe. The latter two is redundant.
Here I switch from ltc to eos.


Also, there is a redundant coin in the subscribedCoins.

And, we need to fix the redundant resubscribe when switch from not coin route to coin route.

[badgerwithagun]

Confirmed. Easy to replicate.

[badgerwithagun]

Fixed in master