Suppressing TOC for library implementation details

Change-Id: Iecac5b6f8de74b64c2501c70ad602c72c2cb8f3f
Grouping same methods under one subsection

Change-Id: I8915435632d5a92cabe6cf5335146729507ab6e5
Changing html style

Change-Id: I90605638a8b8c9336a5a0cc1f6c9b87ab0eed5b7
Removing references to WireFormat from API docs

This change does require any changes of actual implementation.  Specific
language documentation (e.g., doxygen for C++) will include all
necessary specific wire format related parameters and classes.

Change-Id: I51bfdc4a01b6b0de54c88f655f2c9091d1bb35e2
Split registerPrefix into registerPrefix and setInterestFilter

registerPrefix takes care only with registering prefix in NDN network
(currently, only on directly connected NDN hub) and setInterestFilter
only sets the callback (demultiplexer) for the incoming Interests on the
face.

This issue also includes two more "major" changes:
- updated onInterest callback. Now the prototype is (face, filter,
  interest)
- new Face.put method to "publish" Data packet on the face.

Change-Id: Id09fe715c74b3cb69655d0ec05884a24336fafbf
Updating style to match named-data website (more or less)

Change-Id: I89789ed6a89637097ac52f5fb29211b0710458fd