fix: parseInt for minimum_feeds when create asset (#539)
fix: parseInt for minimum_feeds when create asset (#539)

When update minimum_feeds, the type will change from integer to string cause create asset fail.

Repo:
1. create asset
2. select "SmartCoin" option
3. update "MININUM NUMBER OF FEEDs" from default 7 to 3
4. finish the process to do create asset

Issue:
Error shows minimum_feeds should be integer
BitSharesEurope/graphene-ui-testnet,BitSharesEurope/testnet.bitshares.eu,BitSharesEurope/wallet.bitshares.eu,BitSharesEurope/testnet.bitshares.eu,bitshares/bitshares-2-ui,BitSharesEurope/graphene-ui-testnet,BitSharesEurope/testnet.bitshares.eu,bitshares/bitshares-ui,BitSharesEurope/wallet.bitshares.eu,bitshares/bitshares-ui,BitSharesEurope/graphene-ui-testnet,BitSharesEurope/wallet.bitshares.eu,BitSharesEurope/graphene-ui-testnet,BitSharesEurope/wallet.bitshares.eu,bitshares/bitshares-2-ui,bitshares/bitshares-ui,bitshares/bitshares-ui,bitshares/bitshares-2-ui,BitSharesEurope/testnet.bitshares.eu