Change missing headlines to English

src/main/asciidoc/developer_documentation.adoc

@@ -5,8 +5,7 @@
 |...	| ... | ...
 |===
 
-= Entwicklerdokumentation
-
+= Developer documentation
 
 == Introduction and Goals
 
@@ -124,10 +123,10 @@ it is their responsibility to set up a reverse proxy in front of the system.
 It cannot be assumed that the users (customers and administrator) have a technical background,
 so common patterns that are easily learned should be used.
 
-== Kontextabgrenzung
+== System context
 image:models/design/systemContextDiagram.svg[]
 
-== Lösungsstrategie
+== Solution strategy
 === Quality Demand Fulfillment
 [options="header"]
 |===
@@ -158,14 +157,14 @@ image:models/design/systemContextDiagram.svg[]
 *Not important*
 |===
 
-=== Softwareararchitecture
+=== Software architecture
 ==== Top-Level-Architecture
 image:models/design/topLevelArchitecture.svg[]
 
 ==== Client-Server-Diagram
 image:models/design/clientServer.svg[]
 
-=== Entwurfsentscheidungen
+=== Design choices
 * Verwendete Muster
 * Persistenz
 * User Interface
@@ -253,16 +252,15 @@ image:models/design/staff.svg[class design diagram - Staff]
 |===
 
 
-=== Rückverfolgbarkeit zwischen Analyse- und Entwurfsmodell
+=== Link between analysis and design
 _Die folgende Tabelle zeigt die Rückverfolgbarkeit zwischen Entwurfs- und Analysemodell._
 
 [options="header"]
 |===
 |Klasse/Enumeration (Analysemodell) |Klasse/Enumeration (Entwurfsmodell)
-|... |...
 |===
 
-== Laufzeitsicht
+== Runtime view
 * Darstellung der Komponenteninteraktion anhand eines Sequenzdiagramms, welches die relevantesten Interaktionen darstellt.