export/hazard:

Fixed some nrml import references. These got messed up in a merge.
engine:

Fixed a broken 'order by' in a query.
engine:

When getting risk calculations, order by the job's last update date.
export/hazard:

Remove the `makedirs` call in the hazard map export. If the caller
asks to export to a file-like, this breaks.
tools/dump_hazards:

Fixed a kwarg name in the postgres connection creation.
db/models:

Removed an obsolete comment.
logs:

Removed some obsolete TODOs.
qa_tests:

Added new risk QA test fixture packs.
qa_tests/risk/event_based/qatest_1/test:

Re-enable the test skip until new data is available.
Merge pull request #1235 from larsbutler/misc-fixes

Misc. engine fixes to stabilize the build

[r=matley,micheles]