tests/db/model_hzrd_parsedsource_test:

Removed; these test are related to some code which is about to be removed.
db:

Removed `polygon` column (representing the rupture enclosing polygon) from
`parsed_source` table.
input/source:

SourceDBWriter no longer computes the rupture enclosing polygon of each
source. This has never been used and we do not inticipate that it will
be needed.
tests/input/source_test:

Removed part of a test related to the storage of the rupture enclosing polygon
for a `ParsedSource`. This functionality wasn't used and has been removed.
db/models:

Added `characteristic` to `source_type` choices of ParsedSource.
db/schema/openquake.sql:

Added `characteristic` to allowed values of `parsed_source.source_type`.
input/source:

Added `characteristic` to `_source_type`.
tests/data/mixed_source_model.xml:

Added characteristic source examples (3) to test file.
input/source:

Added util function to convert characteristic source from nrml to hazlib.
tests/input/source_test:

Sketched 3 test cases for characteristic fault source conversion.

The `simple` variation already passes.
tests/input/source_test:

Finished complex characteristic fault conversion case.
tests/input/source_test:

Finished multi surface characteristic fault source conversion test case.
tests/input/source_test:

PEP8 fixes.
Merge pull request #1080 from larsbutler/char-source-support

Support for Characteristic Fault Sources

[r=matley] [f=1144225]
tests/calcs/hazard/classical/post_processing_test:

Cleaned up a bunch of post processing tests. These removed tests exercise some
code which will be removed shortly.
calcs/hazard/classical/post_processing:

Removed a bunch of obsolete post processing code.

One code, two code, red code, NUKE CODE!!!
calcs/hazard:

Moved `do_aggregate_post_proc` to the base hazard calculator (so it can be
used by the Event-Based hazard calc.

Cleaned up imports a bit as well.
shapes:

Removed some unused imports.
calcs/hazard/classical/post_processing:

Removed the unused function `setup_tasks`.
db/models:

Removed some more unused code.