add QA testing section to pull request template

Author: megahirt

.github/pull_request_template.md

@@ -19,16 +19,23 @@ Only keep lines below that describe this change, then delete the rest.
 
 Please provide screenshots / animations for any change that involves the UI.  Please provide animations to demonstrate user interaction / behavior changes
 
-## How Has This Been Tested?
+## Testing on your branch
 
-Please describe the manual tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration
+Please describe how to test and/or verify your changes. Provide instructions so we can reproduce.  Please also provide relevant test data as necessary.  These instructions will be used for QA testing below.
 
 - [ ] Test A
 - [ ] Test B
 
-## Checklist:
+## Checklist
 
 - [ ] I have performed a self-review of my own code
 - [ ] I have reviewed the title/description of this PR which will be used as the squashed PR commit message
 - [ ] I have commented my code, particularly in hard-to-understand areas
 - [ ] I have added tests that prove my fix is effective or that my feature works
+
+## qa.languageforge.org testing
+
+Reviewers: add/replace your name below and check the box to sign-off/attest the feature works as expected on qa.languageforge.org
+
+- [ ] Reviewer1 (YYYY-MM-DD HH:MM)
+- [ ] Reviewer2 (YYYY-MM-DD HH:MM)