Trust Level in Customer Info

We have this thing, so we should probably be able to see it

Merge branch 'message-limits'

* message-limits:
  Block outgoing messages when expired
  Contacting support is not billable
  Use TrustLevel to determine daily quota
  Refactor message limits, change to 500/day

Use TrustLevel to determine daily quota

Merge branch 'sip-concurrency'

* sip-concurrency:
  Limit call concurrency for outbound SIP

Limit call concurrency for outbound SIP

Merge branch 'trustlevel-repo'

* trustlevel-repo:
  TrustLevel{,Repo}

TrustLevel{,Repo}

To determine how much permission a customer account should have to take risky
actions.  Seperate from their plan, this is not how much they could do in
theory, but how much the system will allow in practise due to perceived risk.

Starts out with a simple model based on amount of settled payments, and being
used to decide what is an "expensive" route for outbound calls.