WebCalendar v1.9.10

New Features:

• Added a git workflow to build and publish a development Docker image.

Improvements:

• Updated WebCalendar version to v1.9.10.
• Enhanced the logout link to include a CSRF token for added security.
• Reworked HTML files that were not created by Perl.
• Utilized new-ish PHP functions to shorten the code.
• Reworked PHPDoc for clearer documentation.
• Updated PHPUnit from version 9.6.12 to 9.6.13.
• System-wide default can now be set for access type, with users also being able to override with a personal setting.

Bug Fixes:

• Addressed a CSRF issue related to the logout link.
• Fixed Issue #147, where imports with 'webcal://' might not have been working.
• Resolved an issue in edit_entry.php where the date selection appeared instead of the time selection.
• Made corrections for the install page and settings related to cachedir.
• Resolved a PHP warning and fixed an issue with SVG files.
• Addressed a broken unit test and fixed URI in phpunit.xml.
• Fixed an issue related to an undefined variable.

Docker Related:

• Updated docker/build-push-action from v3 to v5.
• Updated docker/login-action from v2 to v3.
• Updated actions/checkout from v2 to v4.

Misc:

• Various corrections and typo fixes.
• Merged multiple pull requests to enhance the overall functionality and reliability of WebCalendar.