test: add manual test instructions, tidy repo

- remove unused files
- update dependencies
- do some minor tidying
- add manual test instructions
- clarify AGPLv3 license

Private-ref: https://tasks.opencraft.com/browse/BB-10035

Author: samuelallan72

.annotation_safe_list.yml

@@ -0,0 +1,31 @@
+## Description
+
+Describe what this pull request changes, and why. Include implications for people using this change.
+
+## Supporting information
+
+Link to other information about the change, such as Jira issues, GitHub issues, or Discourse discussions.
+Be sure to check they are publicly readable, or if not, repeat the information here.
+
+## Testing instructions
+
+Please provide detailed step-by-step instructions for testing this change.
+
+## Deadline
+
+"None" if there's no rush, or provide a specific date or event (and reason) if there is one.
+
+## Other information
+
+Include anything else that will help reviewers and consumers understand the change.
+
+- Does this change depend on other changes elsewhere?
+- Any special concerns or limitations? For example: deprecations, migrations, security, or accessibility.
+- If your [database migration](https://openedx.atlassian.net/wiki/spaces/AC/pages/23003228/Everything+About+Database+Migrations) can't be rolled back easily.
+
+## Pre-merge checklist:
+
+- [ ] `make format` has been run
+- [ ] This has been manually installed in a Tutor devstack and:
+  - [ ] manual testing steps have been followed (as described in ./docs/manual-test-plan.md)
+  - [ ] `make test_migrations` has been run

.coveragerc

@@ -61,3 +61,6 @@ docs/appsembler_api.*.rst
 # Private requirements
 requirements/private.in
 requirements/private.txt
+
+# cookie file for manual tests
+csrf_cookies.txt