Feat new look and fixes

change green arrow color to improve contrast lightgreen->green
fix svg loader config
added custom fork icon
DEx data models (chart, history, markets, orders)
fix issue tokens loaded twice for crowdsale transactions
added CrowdsalePurchaseAmounts component
show -- as reserved balance for bitcoin balances
added helper to check if a string is a valid JSON
improve the meaning for errors with a defined reason
added generateTemplate helper to compose tagged templates
recovery BTC balance by blockchair.com, if there is any error retrieving it by blockchain.info
refactoring improve the meaning of crowdsale purchase transactions

OmniLayer / omniexplorer