Removes _kwps_sort_order from required fields for Intro, Changes required fields check to dynamically take post_parent into account, Adds post_title to required fields for Version, Changes internal flow/handling of Version and TestCollection forms, Adds validation for updating existing version, Fixes issues with incorrect return values from validation for new version, Removes old styling and adds new styling to show border for fields that have a validation error, Changes section parameter value in edit-test-collection view, Refactors edit-version view, Cleans up add-admin-menu.php and klasse-wp-poll-survey.php