Earlier Monitoring Rewards

[pirapira]

After this PR, monitoring services can claim rewards as soon as the settlement period finishes. Before this PR, they had to wait until all locked amounts are claimed.

See #744 and #747 for how this change came about.

[codecov]

Codecov Report

Merging #749 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #749   +/-   ##
=======================================
  Coverage   81.47%   81.47%           
=======================================
  Files          18       18           
  Lines        1139     1139           
  Branches      113      113           
=======================================
  Hits          928      928           
  Misses        183      183           
  Partials       28       28

---

Continue to review full report at Codecov.

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[codecov]

Codecov Report

Merging #749 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #749   +/-   ##
=======================================
  Coverage   81.47%   81.47%           
=======================================
  Files          18       18           
  Lines        1139     1139           
  Branches      113      113           
=======================================
  Hits          928      928           
  Misses        183      183           
  Partials       28       28

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update ef561cb...6639eff. Read the comment docs.

[palango]

Contract changes look good to me and we added a test to make sure it works as expected.

The only strange thing is that I only see one checkmark in the test run (https://travis-ci.org/raiden-network/raiden-contracts/builds/508306124#L446), but maybe this is just scaling:

 raiden_contracts/tests/test_monitoring_service.py ✓

[pirapira]

The test output is messy since I introduced codecov (I changed coverage into pytest and so on, making trial-and-error).