replace course-filter in course-management and add order function, closes #1583

app/controllers/course/admission.php

app/controllers/course/basicdata.php

app/controllers/course/management.php

app/controllers/course/room_requests.php

app/controllers/course/study_areas.php

app/controllers/course/timesrooms.php

app/views/course/shared/order_settings.php

db/migrations/5.3.3_tic_1583_course_selector.php

lib/classes/AdminCourseFilter.class.php

lib/classes/sidebar/CourseManagementSelectWidget.php

lib/classes/sidebar/SelectWidget.php

lib/classes/sidebar/SidebarWidget.php

resources/assets/javascripts/bootstrap/forms.js

resources/assets/stylesheets/scss/i18n.scss

templates/sidebar/select-widget.php