[test][xs]: remove test.ini (not needed -- symlink or run tests from ckan main).
Changing the installation instructions to have the correct plugin name
Cleanup and rework.

- Changed the models to have proper references to foreignkey fields.
- Added a resource_id to the issues and a description to the categories for display
- Fixed the plugin to be more like modern ckanext plugins.
- Moved the API actions into a separate controller.
- Started removing Stream filters to make eventual migration easier.
- Moved templates into /templates/issues/
- Made sure issues works *just* using HTML, will JSify later.
- Added some fields to the get API call
Added helper methods to find counts of resolved/unresolved issues per publisher
Moved urls around so that issues appear nearer to the datasets
Added a publisher view of all their issues.

Currently coded to look at the ckanext.dgu controllers so we may need to fix
that if we want this to be useful to anyone else.
Notifications for new issues.

Now notifies the relevant person about issues raised on datasets.  The definition
of 'relevant person' is:

- The contact-email on the dataset, or
- The contact-email for the publisher, or
- The system admin.

The admin email will only be used as the primary address when there is no other,
in which case it will simply be CC'd.
Generic fix for handling different group types outside of DGU
Cleanup and updating the README
Tiny change to version and removing junk
Implement a means of package "owners" resolving issues
New issue comments model, and outline of UI for Tom to fix up
Merge branch 'master' of https://github.com/datagovuk/ckanext-issues