[Bf-docboard] Animation chapter finally goes in the manual!

[Bastien Montagne]

Hi all, and thanks ;)

Here are a few notes about the consequences of this update for translators:

*As asked by Luca, I renamed most translated pages to follow the new 
english structure. However, I didn’t touch the index, nor the internal 
links, thus there will be many DPL warnings at pages’ bottom about 
redirections… Not a crucial point, but if you have time to fix that for 
your own language(s)…

*There are a few points still pending:

**The two old shape key pages have been merged in one, i.e. both old 
Doc:XX/Manual/Animation/Basic/Deformation/Absolute_Shape_Keys and 
Doc:XX/Manual/Animation/Basic/Deformation/Shape_Keys now should be 
redirected to Doc:XX/Manual/Animation/Techs/Shape/Shape_Keys (I renamed 
the first page, but you’ll have to place a redirect, #REDIRECT 
[[Doc:XX/Manual/Animation/Techs/Shape/Shape Keys]], in the second once 
the merge is done for your language).

**Also, most Doc:XX/Manual/Animation already exist, so obviously I 
couldn’t rename old Doc:XX/Manual/Animation/Basic to them (some are even 
already been translated from current english version…). So again, 
translators, once you have finished updating your 
Doc:XX/Manual/Animation, place a redirect to it in your 
Doc:XX/Manual/Animation/Basic: #REDIRECT [[Doc:XX/Manual/Animation]].

**RO translator(s), you also have started other new pages from current 
english version off anim and rigging, please also add relevant redirects 
in your old pages…

Cheers,
Bastien