v3 : and now with tabs

Tabbed character sheet
New tabbed character sheet (v3)

New tabbed character sheet, with improved readability, over three tabs :
Main (stats, attacks, skills, special abilities), Numenera & Equipment,
Advancements & Background.
The attributes are the same (so are the macros and API functions), so
the campaign can be updated with the new sheet (HTML and CSS) and keep
existing character(s).
New tabbed character sheet (v3)

New tabbed character sheet, with improved readability, over three tabs :
Main (stats, attacks, skills, special abilities), Numenera & Equipment,
Advancements & Background.
The attributes are the same (so are the macros and API functions), so
the campaign can be updated with the new sheet (HTML and CSS) and keep
existing character(s).
Merge pull request #477 from NathaTerrien/master

New tabbed character sheet (v3)