Improve icons, add homepage links to courses

db/migrate/20231008152722_add_moodle_link_to_course.rb

@@ -0,0 +1,5 @@
+class AddMoodleLinkToCourse < ActiveRecord::Migration[7.1]
+  def change
+    add_column :courses, :homepage, :string
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.1].define(version: 2023_10_08_145328) do
+ActiveRecord::Schema[7.1].define(version: 2023_10_08_152722) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -22,6 +22,7 @@ ActiveRecord::Schema[7.1].define(version: 2023_10_08_145328) do
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
     t.date "semester_start_date", default: "2023-10-02"
+    t.string "homepage"
   end
 
   create_table "lectures", force: :cascade do |t|