ENH: Add entity ids to label

Summary

See https://gitlab.indiscale.com/caosdb/customers/cfaed/management/-/issues/29. Adds the entity id to the entity label if a build variable is enabled.

Focus

Small addition in entity.xsl and an if-statement in webcaosdb.js that shows the ids when the build variable is enabled.

Test Environment

Verify that no ids are shown by default. Then, verify that they are when using BUILD_MODULE_SHOW_ID_IN_LABEL=ENABLED.

Check List for the Author

Please, prepare your MR for a review. Be sure to write a summary and a focus and create gitlab comments for the reviewer. They should guide the reviewer through the changes, explain your changes and also point out open questions. For further good practices have a look at our review guidelines

• All automated tests pass
• Reference related Issues
• Up-to-date CHANGELOG.md
• Annotations in code (Gitlab comments)
  • Intent of new code
  • Problems with old code
  • Why this implementation?

Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• Up-to-date CHANGELOG.md
• The test environment setup works and the intended behavior is reproducible in the test environment
• In-code documentation and comments are up-to-date.
• Check: Are there spezifications? Are they satisfied?

For further good practices have a look at our review guidelines.

CHANGELOG.md

@@ -10,6 +10,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 * A `#version_history` URI fragment which can be used to directly open the modal
   with the full version history of the first entity on the page.
+* `BUILD_MODULE_SHOW_ID_IN_LABEL` build variable with which the showing of
+  entity ids together with their names is enabled (disabled by default).
 
 ### Changed (for changes in existing functionality)