[FEATURE] Add full RIDE issued assets to WMD

[alexeykiselev]

Аbstract

With version 4 of RIDE assets can be issued, reissued or burnt by dApp. WMD needs full support of this new functionality.

Specification
Information about assets should be gathered not only by processing transactions, but also by processing script results of invoke transactions. We have to add support of Issue transaction and parsing of it results for assets creation and modification.