split Savable and create Identifiable

app/src/main/java/net/pokeranalytics/android/model/interfaces/Savable.kt

@@ -2,10 +2,19 @@ package net.pokeranalytics.android.model.interfaces
 
 import net.pokeranalytics.android.ui.view.RowRepresentable
 
+interface Identifiable {
+
+    /**
+     * A unique identifier getter
+     */
+    fun uniqueIdentifier(): String
+
+}
+
 /**
  * An interface to easily handle the validity of any object we want to save
  */
-interface Savable {
+interface Savable : Identifiable {
     /**
      * A method to define if an object is safe for saving in database
      */
@@ -14,12 +23,6 @@ interface Savable {
         return true
     }
 
-    /**
-     * A unique identifier getter
-     */
-    fun uniqueIdentifier(): String
-
-
     /**
      * a method to handle the modification of the object.
      * Through [RowRepresentable] the object is able to update the right variable with the new value.