Add gtfs format and test.

Travis fixes

Fix tests now that Shapefiles are detected. (although test_wmts needs https://github.com/ckan/ckan/pull/2867 merging before Travis will go green)

Order json by score

I found it immensely hard to read before.

Also, emacs ftw :)

Run tasks per-package rather than per-resource

Convert report template to jinja.

Remove the code that updates resources

Run reindex once per dataset

When setting the resource.format, it was doing an reindex for every resource, because of the commits done by save_qa_result, so I pulled that out of the loop. Added resource.format writing to update(). Added tests.

Have changed _save_qa_result to return the qa object (that it finds or
creates) so that we can do the format check in the outer update_package
loop.  This way we can be sure we only create one revision.

qa runs per dataset rather than per resource. more efficient, as only update the dataset once and index it once.