Add subsections in section “Building block view”

src/main/asciidoc/developer_documentation.adoc

@@ -150,15 +150,64 @@ so common patterns that are easily learned should be used.
 |... |... |...
 |===
 
-== Bausteinsicht
+== Building block view
-* Package-Diagramm
+=== Package diagram
-* Entwurfsklassendiagramme der einzelnen Packages
+
+Note: In this example project the content package diagram would look like the Top Level Architecture, so it was omitted.
+
+=== Catering
+
+image:models/design/catering.svg[class design diagram - Catering]
 
 [options="header"]
-|=== 
-|Klasse/Enumeration |Description
-|... |...
 |===
+|Class/Enumeration |Description
+|===
+
+=== Catalog
+image:models/design/catalog.svg[class design diagram - Catalog]
+[options="header"]
+|=== 
+|Class/Enumeration |Description
+|CatalogController |A Spring MVC Controller to handle requests to show ``Product``s
+|CatalogInitializer |An implementation of the DataInitializer to create dummy ``Product``s on application startup
+|===
+
+=== Inventory
+image:models/design/inventory.svg[class design diagram - Inventory]
+
+[options="header"]
+|===
+|Class/Enumeration |Description
+|===
+
+=== Order
+
+image:models/design/order.svg[class design diagram - Order]
+
+[options="header"]
+|===
+|Class/Enumeration |Description
+|===
+
+=== User
+
+image:models/design/user.svg[class design diagram - User]
+
+[options="header"]
+|===
+|Class/Enumeration |Description
+|===
+
+=== Staff
+
+image:models/design/staff.svg[class design diagram - Staff]
+
+[options="header"]
+|===
+|Class/Enumeration |Description
+|===
+
 
 === Rückverfolgbarkeit zwischen Analyse- und Entwurfsmodell
 _Die folgende Tabelle zeigt die Rückverfolgbarkeit zwischen Entwurfs- und Analysemodell._