(Feature) add different crowdsale configs for basic scenarios

[vbaranov]

Problem: utility uses one crowdsale.json config with the configuration of crowdsale for now Solution: to create multiple configs covered all basic scenarios and choose crowdsale scenario in config.json

Some basic scenarios:

• [ ] single-tier, no reserved tokens, no whitelist
• [ ] single tier with reserved tokens, no whitelist
• [ ] single tier with reserved tokens and whitelist
• [ ] multiple tiers, no reserved tokens, no whitelist
• [ ] multiple tiers with reserved tokens, no whitelist
• [ ] multiple tiers with reserved tokens and whitelist

[dennis00010011b]

Done. Scenarios can be added to config.json https://github.com/poanetwork/e2e-test-token-wizard/blob/master/config.json

I moved out account.json
Now account's parameters should be in the scenario file https://github.com/poanetwork/e2e-test-token-wizard/blob/master/T2RyWy.json