ADD: Revamp Node Mimir; Remove Admin Mimir
# Current
Nodes can only `haltTrading`, whilst admin can do everything.
67% of nodes need to agree on changing a mimir, but this is too slow for operational mimirs.
# Desired
Remove admin-mimir. Give nodes access to all mimir controls.
# Implementation
## Remove Admin Mimir
Delete the admin keys and remove from handler code.
## Establish "Operational" and "Economic" Mimirs
> Mimirs should be renamed to be consistent `pause{chain}{action}` (currently they are all over the place)
1) Operational mimirs refer to all the `pause{X}` mimirs, and are the fast-change ones
2) Economic mimirs are the rest of mimirs, and require majority change
## Revamp Operational Mimirs
1) Operational mimirs only need `constants/minimumNodesForOperationalMimir: 3`
## Revamp `make mimir` to relay at the same time
1) When a node does `make mimir` for an operational mimir they also add a reason, which fires `make relay`
2) This way the alert is sent immediately into channels to be seconded
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