Fix Prizes to be Consistent

[rootelement]

The prize object should look like this:

{
   "prizeSets":[
      {
         "type":"placement",
         "description":"Challenge Prizes",
         "prizes":[
            {
               "value":100,
               "type":"USD"
            },
            {
               "value":50,
               "type":"USD"
            }
         ]
      },
      {
         "prizes":[
            {
               "type":"USD",
               "value":10
            }
         ],
         "type":"copilot"
      }
   ]
}

I believe this has to change:
https://github.com/topcoder-platform/challenge-engine-ui/blob/develop/src/config/constants.js#L138

And this has to be updated:
https://github.com/topcoder-platform/challenge-engine-ui/blob/develop/src/components/ChallengeEditor/CopilotFee-Field/index.js#L12
Specifically this line:
{ type, prizes: [{ type, value: 0 }] }
type is ambiguous. It should be something like:
{ type, prizes: [{ CHALLENGE_PRIZE_TYPE.MONEY, value: 0 }] }
Not sure on the rest of the changes throughout the system.

[maxceem]

@vikasrohit done via PR #858

[vikasrohit]

@rootelement changes are deployed to dev env.