restore <source> and <target> to 1.5

Author: mikesamuel

pom.xml

@@ -193,8 +193,8 @@ application while protecting against XSS.
  <artifactId>maven-compiler-plugin</artifactId>
  <version>3.3</version>
  <configuration>
- <source>1.6</source>
- <target>1.6</target>
+ <source>1.5</source>
+ <target>1.5</target>
  </configuration>
  </plugin>
  </plugins>