Shorten Phase 2 and Introduce Phase 3

This is our first Community Proposal by @carebbear / Matija which has been moved to a vote due to the strong community response in the forum.

Summary: End Phase 2 at the end of this week (Sunday 28th March 10pm UTC) and introduce Phase 3.

Phase 3 shall last for 6 weeks and only contain the incentivised BANK-ETH SLP pool but not contain any single asset pools. All rewards previously allocated to the second week of Phase 2 (10,500 BANK) are to be distributed only to the BANK-ETH SLP pool over the 6 weeks of Phase 3.

• Week 1 (commencing Sunday 28th March) - 3000 BANK
• Week 2 (commencing Sunday 4th April) - 2500 BANK
• Week 3 (commencing Sunday 11th April) - 2000 BANK
• Week 4 (commencing Sunday 18th April) - 1500 BANK
• Week 5 (commencing Sunday 25th April) - 1000 BANK
• Week 6 (commencing Sunday 2nd May) - 500 BANK