Minor updates to contribution checklist / PR template. Add requirement that PRs need details on how to test them. Add requirement for accessibility & i18n.

Author: tdonohue

.github/pull_request_template.md

@@ -1,7 +1,7 @@
 ## References
 _Add references/links to any related issues or PRs. These may include:_
-* Fixes #`issue-number` (if this fixes an issue ticket)
-* Requires DSpace/DSpace#`pr-number` (if a REST API PR is required to test this)
+* Fixes #issue-number (if this fixes an issue ticket)
+* Requires DSpace/DSpace#pr-number (if a REST API PR is required to test this)
 
 ## Description
 Short summary of changes (1-2 sentences).
@@ -16,13 +16,17 @@ List of changes in this PR:
 **Include guidance for how to test or review your PR.** This may include: steps to reproduce a bug, screenshots or description of a new feature, or reasons behind specific changes. 
 
 ## Checklist
-_This checklist provides a reminder of what we are going to look for when reviewing your PR. You need not complete this checklist prior to creating your PR (draft PRs are always welcome). If you are unsure about an item in the checklist, don't hesitate to ask. We're here to help!_
+_This checklist provides a reminder of what we are going to look for when reviewing your PR. You need not complete this checklist prior to creating your PR (draft PRs are always welcome).
+However, reviewers may request that you complete any actions in this list if you have not done so. If you are unsure about an item in the checklist, don't hesitate to ask. We're here to help!_
 
-- [ ] My PR is small in size (e.g. less than 1,000 lines of code, not including comments & specs/tests), or I have provided reasons as to why that's not possible.
-- [ ] My PR passes [ESLint](https://eslint.org/) validation using `yarn lint`
-- [ ] My PR doesn't introduce circular dependencies (verified via `yarn check-circ-deps`)
-- [ ] My PR includes [TypeDoc](https://typedoc.org/) comments for _all new (or modified) public methods and classes_. It also includes TypeDoc for large or complex private methods.
-- [ ] My PR passes all specs/tests and includes new/updated specs or tests based on the [Code Testing Guide](https://wiki.lyrasis.org/display/DSPACE/Code+Testing+Guide).
+- [ ] My PR is **small in size** (e.g. less than 1,000 lines of code, not including comments & specs/tests), or I have provided reasons as to why that's not possible.
+- [ ] My PR **passes [ESLint](https://eslint.org/)** validation using `yarn lint`
+- [ ] My PR **doesn't introduce circular dependencies** (verified via `yarn check-circ-deps`)
+- [ ] My PR **includes [TypeDoc](https://typedoc.org/) comments** for _all new (or modified) public methods and classes_. It also includes TypeDoc for large or complex private methods.
+- [ ] My PR **passes all specs/tests and includes new/updated specs or tests** based on the [Code Testing Guide](https://wiki.lyrasis.org/display/DSPACE/Code+Testing+Guide).
+- [ ] My PR **aligns with [Accessibility guidelines](https://wiki.lyrasis.org/display/DSDOC8x/Accessibility)** if it makes changes to the user interface.
+- [ ] My PR **uses i18n (internationalization) keys** instead of hardcoded English text, to allow for translations.
+- [ ] My PR **includes details on how to test it**. I've provided clear instructions to reviewers on how to successfully test this fix or feature.
 - [ ] If my PR includes new libraries/dependencies (in `package.json`), I've made sure their licenses align with the [DSpace BSD License](https://github.com/DSpace/DSpace/blob/main/LICENSE) based on the [Licensing of Contributions](https://wiki.lyrasis.org/display/DSPACE/Code+Contribution+Guidelines#CodeContributionGuidelines-LicensingofContributions) documentation.
 - [ ] If my PR includes new features or configurations, I've provided basic technical documentation in the PR itself.
 - [ ] If my PR fixes an issue ticket, I've [linked them together](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue).

CONTRIBUTING.md

@@ -18,6 +18,9 @@ Code Contribution Checklist
 - [ ] PRs **must** not introduce circular dependencies (verified via `yarn check-circ-deps`)
 - [ ] PRs **must** include [TypeDoc](https://typedoc.org/) comments for _all new (or modified) public methods and classes_. Large or complex private methods should also have TypeDoc.
 - [ ] PRs **must** pass all automated pecs/tests and includes new/updated specs or tests based on the [Code Testing Guide](https://wiki.lyrasis.org/display/DSPACE/Code+Testing+Guide).
+- [ ] User interface changes **must** align with [Accessibility guidelines](https://wiki.lyrasis.org/display/DSDOC8x/Accessibility)
+- [ ] PRs **must** use i18n (internationalization) keys instead of hardcoded English text, to allow for translations.
+- [ ] Details on how to test the PR **must** be provided. Reviewers must be aware of any steps they need to take to successfully test your fix or feature.
 - [ ] If a PR includes new libraries/dependencies (in `package.json`), then their software licenses **must** align with the [DSpace BSD License](https://github.com/DSpace/dspace-angular/blob/main/LICENSE) based on the [Licensing of Contributions](https://wiki.lyrasis.org/display/DSPACE/Code+Contribution+Guidelines#CodeContributionGuidelines-LicensingofContributions) documentation.
 - [ ] Basic technical documentation _should_ be provided for any new features or configuration, either in the PR itself or in the DSpace Wiki documentation.
 - [ ] If a PR fixes an issue ticket, please [link them together](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue).