webform 7.x-4.20-rc1

Changes since 7.x-4.19:

• #3032336 by sammuell: Allow conditionals to remove @required from single checkbox
• #2917713 by mattwire, Liam Morland: Prevent JS error when no Webform elements visible
• #3063080 by Liam Morland: Remove checks for token module in testing
• Coding standards
• Refactor webform_validate_date(): Use $date_parts for date parts
• Refactor webform_validate_date(): Rename $field_types to $date_parts
• #3056165: Convert documentation files to markdown
• #3054069 by Liam Morland: Use drupal_get_destination() in confidential form logout link
• #3054045 by Liam Morland: Use request_path() instead of request_uri()
• #3052549 by Liam Morland: Use transactions for submissions
• #3052549 by Liam Morland: Use transactions for conditionals
• #3052549 by Liam Morland: Use consistent name for transaction variables
• #2853391 by Liam Morland: Document webform_submission_render()
• #1261372 by paulvandenburg, ruudvanoijen, JohanKleene, Danny.Wouters: Prevent 'enter' on previous component from opening popup calendar
• #3041384 by paulvandenburg, JohanKleene: Retain Webform settings component fieldset
• #3035829 by pifagor: Coding standards: Delete double ";;"
• #2996933 by possiBri: Fix UI setting form_key in views submission data relationship handler.
• #3028472 by Liam Morland: Fix unit tests
• #3008142 by matthiasm11, Liam Morland, asvira: Trim email addresses in webform_format_email_address()
• #3028472 by Liam Morland: Test webform_format_email_address()
• #3028472 by Liam Morland: Create test file for unit tests
• #1147994 by chrisgross, Liam Morland: Wrap composite elements in a fieldset element
• #3013809 by Liam Morland: Test webform_get_submission_count()
• #3013809 by aklump, asvira: Make webform_get_submission_count() work for anonymous users
• #3023192 by jacob.embree: Only use count() on countables in email component
• #2828317 by geoffreyr, Chris2: Allow datepicker fields to be cleared