Updates to toc and initial content for a few sections.

Adds initial draft text to documenting, reporting and requesting sections.
Adds localizing rst file.
Adds a few items to toc general and coding structures.
Re-factors structure for contributing coding section.

Creates coding directory to hold section pages as content does not fit a single long-form page.
Adds initial draft text for Git and GitHub handling.
Updates general structure of the toc.

List of contribution types sorted in a more logical way.
Added community index.
Updated year on copyright note.
Fixes index for community section.
Updates index, localizing, helping others, coding guidelines section and sidebar intro.
Updates intro text and layout copyright notice.
Don't commit _build/
Merge remote-tracking branch 'upstream/master'