feat(atlassian): add user's name as account string representation

[Ahuahuachi]

Submitting Pull Requests

General

• [x] Make sure you use semantic commit messages. Examples: "fix(google): Fixed foobar bug", "feat(accounts): Added foobar feature".
• [x] All Python code must formatted using Black, and clean from pep8 and isort issues.
• [x] N/A JavaScript code should adhere to StandardJS.
• [x] N/A If your changes are significant, please update ChangeLog.rst.

• [x] N/A If your change is substantial, feel free to add yourself to AUTHORS.

  Provider Specifics

  In case you add a new provider:

• [x] N/A Make sure unit tests are available.
• [x] N/A Add an entry of your provider in test_settings.py::INSTALLED_APPS and docs/installation.rst::INSTALLED_APPS.
• [x] N/A Add documentation to docs/providers/<provider name>.rst and docs/providers/index.rst Provider Specifics toctree.
• [x] N/A Add an entry to the list of supported providers over at docs/overview.rst.

[coveralls]

coverage: 95.591%. remained the same when pulling 7642261a7da402705959eaf597adc37f902cfcff on Ahuahuachi:main into 5e4a7e30abb0021d929dbd05f82d09f8132e710f on pennersr:main.