Allow database and glossary entries to be unapproved

Prerequisites: A course, C1. Two users enrolled in this course, U1 (as student) and U2 (as teacher). A glossary activity in C1, with "Entries -> Approved by default" set to "No", and without any entries present. Test script (database activity): Log in as U2 and go to course C1. Create a new database activity, setting "Entries -> Approval required" to "Yes" Go to tab "Fields" and add at least one field (of any type). Click "Templates". Verify: the "List template" and the "Single template" both contain the text "##approve## ##disapprove## ##export##". Log in as U1. Go to the database activity (as created above). Add an entry to the database. Log in as U2. Go to the database activity. Verify: One entry is shown in the list of entries, with "Approve" button present (grey tickmark icon). Click the "Approve" button. Verify: Green message is displayed ("Entry approved"). Entry is now shown with "Disapprove" button present (grey circle with vertical bar). Click the "Disapprove" button. Verify: Green message is displayed ("Entry disapproved"). Entry is again shown with "Approve" button present (grey tickmark icon). Test script (glossary activity): Log in as U1. Go to the glossary activity. Add an entry to the glossary. Log in as U2. Go to the glossary, and click "Waiting approval". Verify: One entry is shown in the list of entries to be approved, with "Approve" button present (grey tickmark icon on the top-right). Click the "Approve" button. Verify: List is now empty. Go back to the main screen of the glossary. Verify: List contains one entry, with "disapprove" button shown on the bottom-right (grey circle with vertical bar). Click the "Disapprove" button. Verify: List is now empty. At top-right of screen, there is a link "Waiting approval (1)". Click "Waiting approval". Verify: One entry is shown in the list of entries to be approved.