Add module for displaying moodleform in a modal window

Test 1 modal forms As admin go to Site administration>Courses>Course custom fields Create a category Add new fields, edit fields, make sure the form is displayed in the modal dialogue and works properly. Especially check the following: if there are changes in the form and you close the tab the browser displays the warning after you submit, cancel or even simply close the dialogue (by pressing X) there is no "unsaved changes" warning if you try to close the tab when you use atto as the editor, enter the text in the editor field, leave the window open until the "Draft saved" message appears and then refresh the tab. If you start editing a different element - the text is not restored, if you start editing the same element - text is restored. After you submit/cancel/close dialogue and edit the same element - the text is not restored. text in the editor is saved if you use tinymce editor Test 2 ajax (embedded) forms and repeat element Pick the last commit from the branch https://github.com/moodle/moodle/compare/master...marinaglancy:MDL-64554-master-test  git fetch https: //github.com/marinaglancy/moodle MDL-64554-master-test && git merge --no-ff FETCH_HEAD Open pages /tag/test1.php , /tag/test2.php , /tag/test3.php Make sure the repeated elements work in all three forms, browser alerts about closing the window if there are unsaved changes, editor text is saved, etc. For the ajax form in /tag/test3.php repeat the same tests that you were doing for course custom fields Test 3 AJAX/modal forms As admin set $CFG->userquota to something low Login as a regular user (not admin) Go to your private files Add some files to your private files area, save changes Make sure the page is not reloaded, only the filemanager is reloaded Upload file above the limit Save the changes and make sure an error is displayed in a form With unsaved changes try to navigate away (click on a "Dashboard" link, for example) Make sure a warning is displayed Save changes and navigate away Make sure there is no warning Go to your dashboard and locate the "Private files" block Click on the "Manage private files..." link Make sure you can interact with a private files popup the same way you could on the Private files page