Notify Campaign Owner when first time a user create a milestone
In giveth-dapp it's possible to mimic another user, so when it's first time that some account proposing a milestone campaign owner should be informed on accept modal and ask him to check proposer address and verify his identity if needed
"OOOOOO!!! You have a new person requesting funds from your campaign! This is the first time they have ever made a funding request, congratulations on onboarding a new team member!"
^^^ Lets not scare people... this alert's purpose maybe to prevent fraud... but it is hypothetical fraud... as in, IT HAS NEVER HAPPENED! And 99.999% of the time it will be a real new person... No need to scare people.