fix standalone build file pointing to the wrong webapp location

Author: loitly

src/firefly/pom.xml

@@ -37,7 +37,7 @@
                 <artifactId>maven-war-plugin</artifactId>
                 <configuration>
                     <failOnMissingWebXml>false</failOnMissingWebXml>
-                    <webappDirectory>${build.dir}/gwt/firefly</webappDirectory>
+                    <webappDirectory>${build.dir}/war</webappDirectory>
                     <outputDirectory>${build.dir}/exec/</outputDirectory>
                 </configuration>
             </plugin>
@@ -70,4 +70,4 @@
             </plugin>
         </plugins>
     </build>
-</project>
+</project>