DAO Rewards info improvements

Suggestions:
1. The rewards are not fixed per week, perhaps we can get the average instead?
2. The rewards' value doesn't match the role - would be more accurate if the working group name is written
eg. Council member → Council, Content Curator → Content Working Group, and so on
3. `Chat with Integrator` is from testnet. Maybe we can change it to something like [Explore current openings here](https://pioneerapp.xyz/#/working-groups/openings) and add the info below the heading. Another option is `Chat with a community support` with the Discord invite link embedded.
4. The number of workers in the working groups is too [high](https://pioneerapp.xyz/#/working-groups).