add instructions for running migrations tests

Fixes some typos in the ACL guide.

Prevent _ from causing italics

Fixes #3418

Never return null for adapter headers

Expect JobVersion in one of two places

Don't rely on CpuStats.Percent

Just do the math client-side with TotalTicks and Reserved

Ember Data checks strictly against undefined:
https://github.com/emberjs/data/blob/master/addon/adapters/rest.js#L1128

Support CORS for client endpoints

Provide ACL token on client requests

Disable fuzzy search

Add job version to allocation tables

Unload all records when a token is set or cleared

Added to /v1/client/stats and /v1/client/allocation/

This guarantees no privileged data is shown to unprivileged credentials

It doesn't work well for highly precise values, or small datasets, or prefixes.
Which are our three use cases.

Sort allocs by ModifyIndex + bonus content