Documentation updates for Storage Kit classes

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

Set brief for desc of Path.h Query.h Resources.h and Statable.h

Fix warning and cleanup for BPath docs

Forgot this, add a period

Minor BPath doc cleanups.

* Implements BFlattenable::method not overrides, pure virtual.
* Tense of return values should be past.

Move documentation from Path.cpp to Path.dox

And clean it up a bit. Kept brief description in source.
* Also added Axel to authors in Path.dox and Path.cpp because his name
appears in git blame as working on the docs and code for the file.
I hope he doesn't mind.

Documentation updates for Storage Kit classes

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

Set brief for desc of Path.h Query.h Resources.h and Statable.h

Fix warning and cleanup for BPath docs

Forgot this, add a period

Minor BPath doc cleanups.

* Implements BFlattenable::method not overrides, pure virtual.
* Tense of return values should be past.

Move documentation from Path.cpp to Path.dox

And clean it up a bit. Kept brief description in source.
* Also added Axel to authors in Path.dox and Path.cpp because his name
appears in git blame as working on the docs and code for the file.
I hope he doesn't mind.