create ER diagram, refactor to conform to diagram, simplify session management

WorkoutsPlus/Settings/Settings.swift

@@ -22,12 +22,12 @@ struct Settings: View {
 						Section(
 								header: Text("User"),
 								footer: Text("Trainer Mode enables you to add and manage trainees.")) {
-								Text(userId)
-								TextField("name", text: $userId)
-								Toggle(isOn: $isTrainerMode) {
-										Text("Trainer Mode")
+										Text(userId)
+										TextField("name", text: $userId)
+										Toggle(isOn: $isTrainerMode) {
+												Text("Trainer Mode")
+										}
 								}
-						}
 						Section(header: Text("Defaults")) {
 								StepperListItem(itemName: "Rep Count", itemValue: $reps)
 						}
@@ -41,6 +41,18 @@ struct Settings: View {
 								}
 								Button("Reset App", role: .destructive, action: resetApp)
 						}
+						
+						Section {
+								NavigationLink("Credits") {
+										Text(
+														"""
+														# Software Components
+														## Duration Picker
+														https://github.com/mac-gallagher/DurationPicker
+														"""
+										)
+								}
+						}
 				}
 				.navigationTitle("Settings")
 		}