Updated model and storage class diagrams

docs/DeveloperGuide.adoc

@@ -200,8 +200,9 @@ Given below is the Sequence Diagram for interactions within the `Logic` componen
 image::DeletePersonSdForLogic.png[width="800"]
 
 Given below is the Object Diagram that shows the associations between various objects within the `Logic` component for the Login functionality.
+[[fig-LoginLogicObjectDiagram]]
 .Associations between objects in the Logic Component for Login feature
-image::LoginLogicObjectDiagram.PNG[width="800"]
+image::LoginLogicObjectDiagram.png[width="800"]
 
 .  `LogicManager` creates a new instance of `AddressBookParser`, which takes in the user login input details.
 .  This results in the simultaneous instantiation of `LoginUserIdPasswordRoleCommandParser` object and the calling of parse() method on the object.
@@ -232,8 +233,9 @@ As a more OOP model, we can store a `Tag` list in `Address Book`, which `Person`
 image:ModelClassBetterOopDiagram.png[width="800"]
 
 Given below is the Object Diagram that shows the associations between various objects within the `Model` component for the Login functionality.
+[[fig-LoginModelObjectDiagram]]
 .Associations between objects in the Model Component for Login feature
-image::LoginModelObjectDiagram.PNG[width="800"]
+image::LoginModelObjectDiagram.png[width="800"]
 
 .  `filteredLoginDetails` will always show all accounts when `ModelManager` is first instantiated.
 .  Depending on the user input during login, `filteredLoginDetails` will be gradually filtered according to matching user id first, followed by user password and then, user role.
@@ -254,8 +256,9 @@ The `Storage` component,
 * can save the Address Book data in xml format and read it back.
 
 Given below is the Object Diagram that shows the associations between various objects within the `Storage` component for the new account creation functionality.
+[[fig-LoginStorageObjectDiagram]]
 .Associations between objects in the Storage Component for account creation feature
-image::LoginStorageObjectDiagram.PNG[width="800"]
+image::LoginStorageObjectDiagram.png[width="800"]
 
 .  `XmlAccount` is instantiated, with the appropriate account details as parameters for the new `XmlAccount` object.
 .  An `List<XmlAccount>` object is instantiated, with the previous `XmlAccount` object containing the new account's details to be added into the `List<XmlAccount>` object in `XmlSerializableLoginBook`.