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/encoding/block.hpp b/src/encoding/block.hpp
index eef9b3d..388bac5 100644
--- a/src/encoding/block.hpp
+++ b/src/encoding/block.hpp
@@ -385,7 +385,7 @@
 
 
 inline void
-Block::push_back(const Block &element)
+Block::push_back(const Block& element)
 {
   resetWire();
   m_subBlocks.push_back(element);