Start to refactor away from using camel case (Not sure why I did this in the first place)

db.py

@@ -52,11 +52,6 @@ class DataBase():
 
         return (rv[0] if rv else None) if one else rv
 
-    def get_exercises(self):
-        exercises = self.execute(
-            'SELECT exercise_id AS "ExerciseId", name AS "Name" FROM exercise')
-        return [{"ExerciseId": e['ExerciseId'], "Name": e['Name']} for e in exercises]
-
     def get_exercise(self, exercise_id):
         exercise = self.execute(
             'SELECT exercise_id AS "ExerciseId", name AS "Name" FROM exercise WHERE exercise_id=%s LIMIT 1', [exercise_id], one=True)
@@ -503,10 +498,11 @@ class DataBase():
         
         # Calculate viewBox dimensions
         date_range = max_date - min_date
+        total_span = date_range.days or 1
         e1rm_range = (max_e1rm - min_e1rm) or 1
         reps_range = (max_reps - min_reps) or 1
         weight_range = (max_weight - min_weight) or 1
-        vb_width, vb_height = date_range.days, e1rm_range
+        vb_width, vb_height = total_span, e1rm_range
         vb_width *= 200 / vb_width  # Scale to 200px width
         vb_height *= 75 / vb_height  # Scale to 75px height
 
@@ -514,7 +510,7 @@ class DataBase():
         estimated_1rm_scaled = [((value - min_e1rm) / e1rm_range) * vb_height for value in estimated_1rm]
         repetitions_scaled = [((value - min_reps) / reps_range) * vb_height for value in repetitions]
         weight_scaled = [((value - min_weight) / weight_range) * vb_height for value in weight]
-        total_span = date_range.days or 1
+        
         relative_positions = [(date - min_date).days / total_span for date in start_dates]
 
         # Convert relative positions and scaled estimated 1RM values to numpy arrays