GNM-935 Liste aller backend-Libraries erstellen
diff --git a/pom.xml b/pom.xml
index 639ff7c..114c45e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -17,16 +17,27 @@
         <easymock.version>3.4</easymock.version>
         <powermock-api-easymock.version>1.6.6</powermock-api-easymock.version>
         <powermock-module-junit4.version>1.7.3</powermock-module-junit4.version>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <servlet-api>3.0.1</servlet-api>
-        <maven.test.skip>false</maven.test.skip>
         <jacoco-maven-plugin.version>0.7.9</jacoco-maven-plugin.version>
         <sonar-maven-plugin.version>3.0.2</sonar-maven-plugin.version>
-        <swagger-core-version>1.5.15</swagger-core-version>
         <swagger-maven-plugin-version>3.1.6</swagger-maven-plugin-version>
-        <swagger-core-version>1.5.17</swagger-core-version>
-        <swagger-annotations-version>1.5.13</swagger-annotations-version>
         <swagger-jersey2-jaxrs>1.5.10</swagger-jersey2-jaxrs>
+        <httpclient-version>4.5.5</httpclient-version>
+        <jaxrs-ri-version>2.22.1</jaxrs-ri-version>
+        <jackson-annotations-version>2.5.4</jackson-annotations-version>
+        <maven-compiler-plugin-version>3.1</maven-compiler-plugin-version>
+        <maven-jar-plugin-version>3.0.2</maven-jar-plugin-version>
+        <maven-war-plugin-version>2.1</maven-war-plugin-version>
+        <maven-project-info-reports-plugin-version>2.7</maven-project-info-reports-plugin-version>
+        <asciidoctor-maven-plugin-version>1.5.3</asciidoctor-maven-plugin-version>
+        <asciidoctorj-pdf-version>1.5.0-alpha.11</asciidoctorj-pdf-version>
+        <jruby-complete-version>1.7.21</jruby-complete-version>
+        <asciidoctorj-version>1.5.4</asciidoctorj-version>
+        <asciidoctorj-diagram-version>1.5.4.1</asciidoctorj-diagram-version>
+
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <maven.test.skip>false</maven.test.skip>
+        <skip.asciidoc>false</skip.asciidoc>
     </properties>
     <dependencies>
 
@@ -34,12 +45,12 @@
         <dependency>
             <groupId>org.glassfish.jersey.bundles</groupId>
             <artifactId>jaxrs-ri</artifactId>
-            <version>2.22.1</version>
+            <version>${jaxrs-ri-version}</version>
         </dependency>
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>
             <artifactId>httpclient</artifactId>
-            <version>4.5.5</version>
+            <version>${httpclient-version}</version>
         </dependency>
         <dependency>
             <groupId>javax.servlet</groupId>
@@ -108,7 +119,7 @@
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-annotations</artifactId>
-            <version>2.5.4</version>
+            <version>${jackson-annotations-version}</version>
         </dependency>
         <dependency>
             <groupId>io.swagger</groupId>
@@ -131,7 +142,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.1</version>
+                <version>${maven-compiler-plugin-version}</version>
                 <configuration>
                     <source>1.8</source>
                     <target>1.8</target>
@@ -140,7 +151,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
-                <version>3.0.2</version>
+                <version>${maven-jar-plugin-version}</version>
                 <configuration>
                     <archive>
                         <manifest>
@@ -152,7 +163,7 @@
             </plugin>
             <plugin>
                 <artifactId>maven-war-plugin</artifactId>
-                <version>2.1</version>
+                <version>${maven-war-plugin-version}</version>
                 <configuration>
                     <archive>
                         <manifest>
@@ -165,7 +176,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-project-info-reports-plugin</artifactId>
-                <version>2.7</version>
+                <version>${maven-project-info-reports-plugin-version}</version>
             </plugin>
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
@@ -205,27 +216,27 @@
             <plugin>
                 <groupId>org.asciidoctor</groupId>
                 <artifactId>asciidoctor-maven-plugin</artifactId>
-                <version>1.5.3</version>
+                <version>${asciidoctor-maven-plugin-version}</version>
                 <dependencies>
                     <dependency>
                         <groupId>org.asciidoctor</groupId>
                         <artifactId>asciidoctorj-pdf</artifactId>
-                        <version>1.5.0-alpha.11</version>
+                        <version>${asciidoctorj-pdf-version}</version>
                     </dependency>
                     <dependency>
                         <groupId>org.jruby</groupId>
                         <artifactId>jruby-complete</artifactId>
-                        <version>1.7.21</version>
+                        <version>${jruby-complete-version}</version>
                     </dependency>
                     <dependency>
                         <groupId>org.asciidoctor</groupId>
                         <artifactId>asciidoctorj</artifactId>
-                        <version>1.5.4</version>
+                        <version>${asciidoctorj-version}</version>
                     </dependency>
                     <dependency>
                         <groupId>org.asciidoctor</groupId>
                         <artifactId>asciidoctorj-diagram</artifactId>
-                        <version>1.5.4.1</version>
+                        <version>${asciidoctorj-diagram-version}</version>
                     </dependency>
                 </dependencies>
                 <configuration>