The images were not loading in the filemanager.
This meant that when the element was saved the
images would be deleted for that course, affecting
existing image elements as well.
The elements for each page are listed in a table below the other page settings, meaning each page has a separate table for listing their elements. Each element is now edited in a pop-up, rather than having all the element settings displayed at once on the form causing it to look overcrowded. There is also no longer any need for the function add_element to add default values for the elements when they are added, as a a form is shown when you click to add an element where you can enter the values before it is created.
Note: I did not create a db/upgrade.php script to add the new database columns as this module should not be currently used by anyone.
