modified singleton behaviors to allow a workspace like behavior. implemente CatalogueDatabase#load_file shortcut
fix isf bulletin format
removed unused #recreate call
added a simple callback to monitor the progress
remove enum constraint on scales
skip parsing errors when no failure should happen
fixed some pylint issues
renamed module_error -> model_error
first pass
Merge branch 'master' into importer-bugfix-1056865
Merge branch 'importer-bugfix-1056865' into duplicate-finding-qatest
test fixed.
Merge pull request #24 from matley/importer-bugfix-1056865

Importer bugfix 1056865
qa test fixed
Merge pull request #25 from matley/duplicate-finding-qatest

Duplicate finding qatest
support sqlalachemy < 0.7.5
fix qa_tests. no more assumptions on the order of the groups in DuplicateFindingTestCase
updated sphinx docs
Merge branch 'master' of github.com:gem/oq-eqcatalogue-tool
small fixes to Harmoniser docs