Flesh out work items in the UI

app/models/concerns/Trackable.rb

@@ -0,0 +1,5 @@
+module Trackable
+  def total_overall_time
+    tracked_time_entries.sum(&:duration)
+  end
+end

app/models/concerns/course_item.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+module CourseItem
+  def week_number
+    ((start_time.beginning_of_week - course.semester_start_date.to_time) / 1.week).floor + 1
+  end
+end