refactor

[artman325]

• [x] Need to replace NPM packages from @artman325/ to @intercoin/. Be carefully with versions
• [x] make little improvements which are not required a lot of times
• [x] Rewards.sol should extend FundContract
• [x] Rewards contract should be multiple. and call in loop
• [x] rename issueWalletTokens to issueCommunityCoins
• [x] when unstake need to call REwards on UNstake т.е. как будто купил токены в fund contract
• [x] rename "addBonus" to "addRewards" in REwardsContract Added:
• [x] logic bug in buyInPresaleAndStake. token send immediately after buy from presale?!?! https://github.com/Intercoin/StakingContract/blob/459786a5bfe60b04fb3fac59d7358c763e4bbbcf/contracts/CommunityStakingPool.sol#L239
• [x] need to check presaleAddress for belong to our ecosystem in buyInPresaleAndStake method

[artman325]

additionaly fixed calculation onStake: not used rewardFraction before

[artman325]

also replaced string errors representation to the Error structure