permission based counters

contracts/models.py

...racts/templates/contracts/view_contract_filing_areas.html

contracts/templates/contracts/view_contract_issues.html

contracts/templates/contracts/view_contract_types.html

contracts/templates/contracts/view_contractees.html

contracts/templates/contracts/view_signees.html

contracts/templatetags/counters.py

contracts/templatetags/subtract.py

oidc/auth.py

users/models.py