Add alert mainnet addresses and placeholders
Add alert mainnet addresses and placeholders

dexX7/mastercore,mastercoin-MSC/mastercore,dexX7/mastercore,dexX7/mastercore,mastercoin-MSC/mastercore,mastercoin-MSC/mastercore,mastercoin-MSC/mastercore,mastercoin-MSC/mastercore,dexX7/mastercore