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/main/java/com/intel/jndn/mock/MockFace.java b/src/main/java/com/intel/jndn/mock/MockFace.java
index 16ffd52..dc1661a 100644
--- a/src/main/java/com/intel/jndn/mock/MockFace.java
+++ b/src/main/java/com/intel/jndn/mock/MockFace.java
@@ -36,8 +36,8 @@
 /**
  * A client-side face for unit testing.
  *
- * @author Alexander Afanasyev, <aa@cs.ucla.edu>
- * @author Andrew Brown <andrew.brown@intel.com>
+ * @author Alexander Afanasyev, aa@cs.ucla.edu
+ * @author Andrew Brown, andrew.brown@intel.com
  */
 public class MockFace extends Face {
   /**
@@ -163,7 +163,7 @@
    *
    * @throws SecurityException should not be thrown by this test class
    */
-  public MockFace() throws SecurityException {
+  public MockFace() {
     this(DEFAULT_OPTIONS);
   }