added image field to lessons_params in lessons_controller
change text field length for lessons _form.html.erb
corrected function delete_picture in lessons_controller
changed redirect_to in delete_picture action in lessons_controller
change import function loc_id
picture format adjusted to search index view and class details page
styling for class details picture to fit size
commented the picture validation in lesson.rb
changed search_for in lesson.rb to find all classes for all matching locations, e.g. 'Moksha Arts'
implemented sorting for subcategories on category search page