Quickfindlist updates for 4.x

On a 4.4 site, getting the following errors: pix_url is deprecated. Use image_url for images and pix_icon for icons. line 1949 of /lib/outputlib.php: call to debugging() line 126 of /blocks/quickfindlist/block_quickfindlist.php: call to theme_config->pix_url() line 337 of /blocks/moodleblock.class.php: call to block_quickfindlist->get_content()

Renaming pix_url to image_url in the block_quickfindlist.php file gets rid of that error.

When clicking on the block settings, it now throws the following errors (not exactly sure when this started) : Coding error detected, it must be fixed by a programmer: Property config does not exist Error code: codingerror

line 68 of /blocks/edit_form.php: coding_exception thrown
line 45 of /blocks/quickfindlist/edit_form.php: call to block_edit_form->__get()
line 139 of /blocks/edit_form.php: call to block_quickfindlist_edit_form->specific_definition()
line 217 of /lib/formslib.php: call to block_edit_form->definition()
line 73 of /lib/form/classes/dynamic_form.php: call to moodleform->__construct()
line 71 of /lib/form/classes/external/dynamic_form.php: call to core_form\dynamic_form->__construct()
line ? of unknownfile: call to core_form\external\dynamic_form::execute()
line 253 of /lib/external/classes/external_api.php: call to call_user_func_array()
line 83 of /lib/ajax/service.php: call to core_external\external_api::call_external_function()

Also, for accessibility purposes, the block throws an accessibility error with accessibility checkers - it is needing an aria label for the text input box.

Thanks for looking at this. Happy to help test.

marxjohnson / moodle-block_quickfindlist

Quickfindlist updates for 4.x #30