* add fixtures to conftest.py
* use fixtures in test_appctx.py
* use fixtures in test_blueprints.py
* use fixtures in test_depreciations.py
* use fixtures in test_regressions.py
* use fixtures in test_reqctx.py
* use fixtures in test_templating.py
* use fixtures in test_user_error_handler.py
* use fixtures in test_views.py
* use fixtures in test_basics.py
* use fixtures in test_helpers.py
* use fixtures in test_testing.py
* update conftest.py
* make docstrings PEP-257 compliant
* cleanup
* switch dictonary format
* use pytest parameterization for test_json_as_unicode
