db/schema/openquake.sql, engine:

Removed mentions of input reuse on some comments.

This functionality was recently removed.
calcs/hazard/general:

Removed some (obsolete) input reuse logic from `initialize_sources`.
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
updated tests
unit tests pass
added risk.writers module
fix signal_task_complete calls
fix scenario damage args order
Merge pull request #1148 from larsbutler/cleanup-input-reuse

Cleanup input reuse

[r=matley] [f=*trivial]
renamed taxonomies_imts to taxonomy_imt
aesthetic change
updated export test
Merge branch 'master' of https://github.com/gem/oq-engine into taxonomies-imt
Merge pull request #1154 from matley/taxonomies-imt

Support non-unique taxonomy -> IMT association across different vulnerability files
Cosmetic change
remove check on interest rate