Simplified rating validity check

backend/src/main/kotlin/uk/co/neviyn/observationdatabase/Entity.kt

@@ -122,7 +122,11 @@ data class RatingComponent(
     val rating: Int,
     val strengths: String = "",
     val improvements: String = ""
-)
+) {
+    fun ratingValid(): Boolean {
+        return rating in 1..5
+    }
+}
 
 @Entity
 data class Scenario(
@@ -149,15 +153,14 @@ data class Scenario(
 
 ) {
     fun ratingsAllValid(): Boolean {
-        val limitation = 1..5
-        return monitoring.rating in limitation &&
-        controlProcedural.rating in limitation &&
-        control.rating in limitation &&
-        conservatism.rating in limitation &&
-        teamworkCommunications.rating in limitation &&
-        teamworkLeadership.rating in limitation &&
-        teamworkWorkload.rating in limitation &&
-        knowledge.rating in limitation
+        return monitoring.ratingValid() &&
+        controlProcedural.ratingValid()&&
+        control.ratingValid() &&
+        conservatism.ratingValid() &&
+        teamworkCommunications.ratingValid() &&
+        teamworkLeadership.ratingValid() &&
+        teamworkWorkload.ratingValid() &&
+        knowledge.ratingValid()
     }
 }