refactor: Don't call transactionCountOf$ until needed (#414)

* Show parity/light.js's logs too

* Remove txCount from withAccount

* withBalance shows component immeidately

* Play around

* Make it work

* Cleaner code

* Remove 'Loading account tokens...' modal

* Re-order import

* Optimize code

* Fix regression

* Fix typo

* Luke's grumbles

* Put "checking..." when fetching async values

* Show gas error on amount field