[Confluence] added new endpoints for confluence whiteboards + docs + example (#1377)

* fixing minor issue in scrap_regex_from_issue method

* new Confluence method scrap_regex_from_page+ docs + examples

* added method get_attachments_ids_from_page to jira.py

* added method download_attachments_from_issue

* refactoring download_all_attachments_from_page method

* finished download_attachments_from_issue

* added two new methods: download_attachments.from_issue  and get_attachments_ids_from_issue

* added fix to the infinitive loop

* adding reursion depth condition

* fixed reursion depth condition

* added update4d jira.py with new method + docs +example

* added update4d jira.py with new method + docs +exampl

* fix flake8 issue

* hotfix get_issue_tree_recursive

* added expand to get_issue method, added new method

* get_issue_status_changelog method

* included param expand in get_issue method decription

* WIP PR changes - https://github.com/atlassian-api/atlassian-python-api/pull/1357

* improving index.rst docs https://github.com/atlassian-api/atlassian-python-api/issues/1365

* added whiteboard methods

* added confluence whiteboard endpoints

---------

Co-authored-by: gkowalc <>
Co-authored-by: Greg <gkowalc>