Fix primary and foreign keys display

- Fix code indentation
- Remove CSS class "well", doesn't look good especially when foreign
  keys have a well inside a well
- Foreign key display had a <ul> inside a <ul> (invalid HTML), remove
  the outer <ul>
- Add a : after the referenced resource's name
- Fix the referenced resource link URL
- Fix capitalisation style of Primary key and Foreign keys titles
Merge branch 'master' of github.com:ckan/ckanext-b2 into display-primary-keys

Conflicts:
	ckanext/datapackager/lib/helpers.py
	ckanext/datapackager/tests/controllers/test_package.py
Fix a couple of failing tests
Merge branch 'master' of github.com:ckan/ckanext-b2 into display-primary-keys

Conflicts:
	ckanext/datapackager/lib/helpers.py
Merge branch 'display-primary-keys' of github.com:ckan/ckanext-b2 into display-primary-keys

Conflicts:
	ckanext/datapackager/lib/csv_utils.py
	ckanext/datapackager/lib/helpers.py
	ckanext/datapackager/tests/controllers/test_package.py