Staking CTX

[crisgarner]

Enable CTX Holders to stake and delegate their CTX to encourage crypto politicians and governance.

• [x] Stake CTX
• [x] Earn Rewards in CTX
• [x] Select Delegatee
• [x] Change Delegatee
• [x] Contract Tests
• [x] Audits
• [x] Frontend for Staking
• [ ] Graphs for Staking