Replace a reference to the 'openquake' command with 'oq-engine'
Merge pull request #1611 from gem/rem-openquake-ref

Replace a reference to the 'openquake' command with 'oq-engine'
Now also csv outputs are exported by default
Now the engine logs on a file always
Merge pull request #1613 from gem/export-event-loss-table

Now also csv outputs are exported by default
Merge pull request #1614 from gem/log-always

Now the engine logs on a file always
Added an --export-stats option
Some fixes
Merge branch 'master' of github.com:gem/oq-engine into classical_tiling
Fixed a tricky bug with the hazard_maps