Implement question filtering

Instance setup Fresh install an instance using this repo or Upgrade the current instance using this repo   Set Up Login to the site as a site admin Create a course Navigate to the question bank Create some questions in the default category Test scenario 1 - Apply filters in question bank view: Go to the above course Create a new question category Add questions to the newly created category Navigate back to the question bank Remove the default category from the Type of select selection in the question bank filter Select the newly added category Click apply filters Confirm that the questions of that category are visible Confirm that other questions from different categories are available here Change the selection to the default category Click apply filters Confirm questions from default categories are available in the question bank 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" Remove the default category from the Type of select selection in the question bank filter Select the newly added category 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" Remove the default category from the Type of select selection in the question bank filter Select the newly added category Click apply filters Scroll down and select number of random question Click on "Add random question" Expected: random questions are added to the quiz