engine/views:

Risk and hazard calc run views should clean up temp files before
concluding.
engine/tests:

Ignore errors when trying to clean up tempfiles in the test, since the
function under test is supposed to do this anyway.
Revert "engine/tests:"

This reverts commit cdc5201d23df97056f97dfd524b6554905cdb455.
engine/tests:

Added some missing mocks and test statements to RunHazardCalcTestCase.
engine/tasks:

Added TODO comment.
engine/tests:

Added `RunRiskCalcTestCase`.