Remove swagger and minor feature extensions and bug fixes

- Various Bug fixes and improvements
- Management API extended
- Swagger removed
- Guava Upgraded to 19

hawkbit-rest-api/pom.xml

@@ -34,9 +34,5 @@
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-annotations</artifactId>
       </dependency>
-      <dependency>
-         <groupId>io.swagger</groupId>
-         <artifactId>swagger-annotations</artifactId>
-      </dependency>
    </dependencies>
 </project>