SEC-2646: Use Gradle Wrapper with source code

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Wed Jun 11 13:57:21 CDT 2014
+#Fri Jun 13 11:14:37 CDT 2014
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=http\://services.gradle.org/distributions/gradle-1.12-bin.zip
+distributionUrl=http\://services.gradle.org/distributions/gradle-1.12-all.zip