WPMU DEV - Appointments+ 2.4.2

Added filter 'app-export-appointment-args' which allows changing export arguments eg. sorting field.
Fixed incompatibilities with Divi Builder.
Fixed missing sortings on the frontend.
Fixed problems with changing the custom time for slots.
Fixed problem with paddings.
Fixed re-send confirmation emails.
Improved Yes/No choice used on appointments configuration screen.

-Fixed a problem with the export of single appointment.
-Fixed a problem with no visible slots on Weekly Calendar view.
-Fixed a problem with viewing PayPal transaction.
-Fixed potential vulnerabilities in appointments list.
-Improved "Create an Appointment Page" UX.
-Improved default additional CSS to avoid interaction with default classes.
-Improved help tab, now we use WordPress built-in help tab.

• Fixed export additional appointment fields (only PRO version).
• Fixed problem with bower_components directory.
• Fixed problem with extra information displayed in the wrong column.
• Fixed problem with no visible slots on Monthly view.
• Fixed problem with too many emails.
• Fixed problem with worker shortcode.
• Fixed URL building for dismissing a message.
• Moved external sources into one parent directory.
• Prevent process if a user does not exist.
• Removed wp_enqueue_* functions from views.
• Updated Unslider to version 2.0.3.