Feature expose data

Refresh #26
There were so many conflicts to resolve (multiple times) to rebase on master, that it was much simpler to remove the branch and recreate a new one.

This PR adds a tables property to the font object.
This new property exposes most raw data of most of the required sfnt tables.
Two web interfaces, font-inspector.html and glyph-inspector.html are provided.
This is an answer to issue #5. It gives better insight of how font files are constructed, which in turn can help improving this project.