Documentation updates for Storage Kit classes

* Added \since to each method and parameter.
* Whitespace cleanup.
* Some other minor cleanups and updates.

Whoops, NodeInfo.h not Node.h

Some updates to NodeInfo docs

Copy-pasta error: storage not app

Move documentation from NodeInfo into the API docs.

* Delete the docs from NodeInfo.cpp and NodeInfo.h
* I snuck a couple of style fixes into NodeInfo.cpp
* I had to make a small modification to MimeType.dox to prevent it
from overriding the docs of one of the methods in NodeInfo.dox.

Documentation updates for Storage Kit classes

* Added \since to each method and parameter.
* Whitespace cleanup.
* Some other minor cleanups and updates.

Whoops, NodeInfo.h not Node.h

Some updates to NodeInfo docs

Copy-pasta error: storage not app

Move documentation from NodeInfo into the API docs.

* Delete the docs from NodeInfo.cpp and NodeInfo.h
* I snuck a couple of style fixes into NodeInfo.cpp
* I had to make a small modification to MimeType.dox to prevent it
from overriding the docs of one of the methods in NodeInfo.dox.