PEP8 conformance
Moved sphinx template related resources into Sphinx namespace
Generalized dictionary based menu input prompting.
Added notebook style input highlighting.
Added notebook output formatting style
Disable TOC for howto.
Fixed image sizing problem
	Small images were getting streched to larger scales.
Added prompt to ntoebook style,
Fixed render output for non-textual py out.
Image output detection for pyout
Fixed typo, remove extra jpeg
Simplified custom verbaatim block, alltt used.
Output latex in now placed in verbatim safe for latex.
Removed extra line
Added option to center output and remove title.
Added option to remove title and center output
Fixed, removed extra parenthesis
Fixed, added calls to center_output
Renamed remove_math_space to rm_math_space
To keep consistent with rest of nbconvert
Made remove math space available as filter.
Filter math symbols in notebook latex also, since
	notebook supports space between $ and
math.