Better searching/filtering in the question bank, so more flexible randomisation in quizzes

Instance setup Fresh install an instance using this repo or Upgrade the current instance using this repo Set Up Restore the attached "Moodle Activity Examples.mbz" to a new course. Test scenario 1 - Apply filters in question bank view: Go to the restored course Navigate back to the question bank Remove the default category from the Type of select selection in the question bank filter "Default for questions" in the category filter Click apply filters Confirm that the 8 questions of that category are visible Confirm that other questions from different categories not visible Change the selection to "Top for activity examples" Click apply filters Confirm that no questions are visible Check "also show questions from subcategories" Click apply filters Confirm that questions from all child categories are visible Press "Add condition" Set the new filter's "Select" menu to "Tag" Add the tag "Drag and drop" to the Tag filter Click apply filters Confirm that you only see the 2 questions tagged "drag and drop" Set the "Match" parameter of the tag filter to "None" Click apply filters Confirm that you only see the questions with tags other than "drag and drop" Set the "Match" parameter of the tag filter to "All" Add the tag "cloze" to the Tag filter Click apply filters Confirm that you see no questions Set the "Match" parameter of the tag filter to "Any" Click apply filters Confirm that you see all questions tagged with either "drag and drop" or "cloze" Press "Add condition" Set the new filter's "Select" menu to "Show question text in the question list?" Set the question text filter to "Yes" Click apply filters Confirm that you see the question text below each question Set the question text filter to "No" Click apply filters Confirm that you don't see the question text below each question Reload the page Confirm that the existing filters are re-applied Click "Clear Filters" Add the following filter conditions: Category: 3.0 new question types Show hidden questions: No Click "Apply filters" Delete the question "Recreate the river thames" You should not see the deleted question Set the "Show hidden questions" filter to "Yes" Click "Apply filters" You should now see the deleted question as well Test scenario 2 - Adding questions to a quiz from question bank Go to the above course Create a quiz Go to Quiz > Questions > Add question "from question bank" Set the Category filter to "Default for questions" Click apply filters Select questions Click on "Add selected questions to the quiz" Expected: those question are added to the quiz Test scenario 3 - Adding random questions  to a quiz Go to the above course Create another quiz Go to Quiz > Questions > Add question using "a random question" Set the Category filter to "Default for questions" Click apply filters Scroll down and select number of random question Click on "Add random question" Expected: random questions are added to the quiz Test scenario 4 - filters persist via URL Go to the above course Go to the question bank Apply a set of filters and take a note of their values Refresh the page The same filters should be re-applied Turn editing mode on and off The same filters should be re-applied each time Copy the URL and open it in a new browser, logging in if necessary The same filters should be re-applied