Add better instrumentation to the calculators
Replaced run_job_sp with run_hazard_job
Added instrumentation to other calculators
Optimized the EnginePerformanceMonitor
Merge branch 'fix-haz-map-uhs-filename' of http://github.com/larsbutler/oq-engine into better-instrumentation
Cosmetic change
db/schema:

Dropped the `eqcat` schema entirely. It wasn't used.
db/models:

Removed eqcat tables.
bin/oq_create_db:

Removed `eqcat` stuff from DB script.
tests/db/routers_test:

Removed eqcat tests.
tests/db/model_uiapi_jobprofile_test:

Deleted.
db/schema:

Removed `oq_job_profile` table.
db/models:

Removed OqJobProfile table.
db/schema:

Removed `job2profile` table.
db/models:

Removed `Job2profile` and related functions.
tests/kvs_test:

Removed an unused import.
tests/engine_test:

Pyflakes cleanup.
db/models:

Removed `inputs4job`.
tests/db/routers_test:

Removed references to OqJobProfile.
tests/db/model_risk_exposure_test:

Clean up test fixtures.