Fix code style issues

Fix e-mails in JavaDoc
Fix visibility warnings in MockForwarder
Add test ensuring public methods should be public.
Simplify logic of PitImpl
Remove redundant code: unused imports, unnecessary casts
Bump gradle version
Fix code analysis issues
Disable checkstyle code analysis; TODO configure to IntelliJ-style settings and re-enable
Add new logging statements
diff --git a/src/test/java/com/intel/jndn/mock/MockKeyChainTest.java b/src/test/java/com/intel/jndn/mock/MockKeyChainTest.java
index 3d8ec6f..1448423 100644
--- a/src/test/java/com/intel/jndn/mock/MockKeyChainTest.java
+++ b/src/test/java/com/intel/jndn/mock/MockKeyChainTest.java
@@ -23,7 +23,7 @@
 /**
  * Test MockKeyChain.
  *
- * @author Andrew Brown <andrew.brown@intel.com>
+ * @author Andrew Brown, andrew.brown@intel.com
  */
 public class MockKeyChainTest {