Rename some constants so they are the same as in the react app

Author: rolandgeider

lib/helpers/consts.dart

@@ -36,8 +36,12 @@ const DEFAULT_WEIGHT_UNIT = 1;
 /// Default impression for a workout session (neutral)
 const DEFAULT_IMPRESSION = 2;
 
-/// Default weight unit is "repetition"
-const DEFAULT_REPETITION_UNIT = 1;
+// Weight and repetition units for the workout logs
+const REP_UNIT_REPETITIONS = 1;
+const REP_UNIT_TILL_FAILURE = 2;
+
+const WEIGHT_UNIT_KG = 1;
+const WEIGHT_UNIT_LB = 2;
 
 /// Time to locally cache values such as ingredients, etc
 const DAYS_TO_CACHE = 20;

lib/helpers/misc.dart

@@ -42,7 +42,7 @@ String repText(
     // rather "8 repetitions". If there is weight we want to output "8 x 50kg",
     // since the repetitions are implied. If other units are used, we always
     // print them
-    if (repetitionUnitObj.id != DEFAULT_REPETITION_UNIT || weight == 0 || weight == null) {
+    if (repetitionUnitObj.id != REP_UNIT_REPETITIONS || weight == 0 || weight == null) {
       out.add(repetitionUnitObj.name);
     }
   }

lib/providers/workout_plans.dart

@@ -85,7 +85,7 @@ class WorkoutPlansProvider with ChangeNotifier {
 
   /// Return the default weight unit (reps)
   RepetitionUnit get defaultRepetitionUnit {
-    return _repetitionUnit.firstWhere((element) => element.id == DEFAULT_REPETITION_UNIT);
+    return _repetitionUnit.firstWhere((element) => element.id == REP_UNIT_REPETITIONS);
   }
 
   List<WorkoutPlan> getPlans() {