src: Improving consistency and correcting code style

As of this commit, all data structures can be directly constructed from
wire format.

This commit excludes full correction of code style in security/ and
tools/ndnsec*, which will be part of a different commit.

Change-Id: I121ac1f81948bc7468990df52cdefeb2988d91a1
Refs: #1403
diff --git a/src/util/command-interest-generator.hpp b/src/util/command-interest-generator.hpp
index 18bc960..8b51cd9 100644
--- a/src/util/command-interest-generator.hpp
+++ b/src/util/command-interest-generator.hpp
@@ -62,7 +62,7 @@
     .append(name::Component::fromNumber(random::generateWord64()));
   interest.setName(commandInterestName);
 
-  if(certificateName.empty())
+  if (certificateName.empty())
     m_keyChain.sign(interest);
   else
     m_keyChain.sign(interest, certificateName);