Added Serbian skeleton
Translated some parts
More translations
Some changes

Reverted back ..note::
fix various wording issues
Update authentication.rst

Changes allow any user to use the code and properly understand how to change the hash type of a new SimplePasswordHasher object.
Merge pull request #1193 from Cayan/patch-1

Update authentication.rst
Updated containable.rst

Corrected a description
Merge pull request #1195 from sumith/patch-1

Updated containable.rst
[fr] Follow #1192

fix various wording issues
[fr] Follow #1193

Update authentication.rst
various wording issues
various wording issues
various wording changes
Update what-is-cakephp-why-use-it.rst
Merge pull request #1198 from alanfgh/patch-5

various wording changes
Merge pull request #1196 from alanfgh/patch-4

various wording issues
Merge pull request #1197 from alanfgh/patch-3

various wording issues
Merge pull request #1199 from alanfgh/patch-6

Update what-is-cakephp-why-use-it.rst
Update url-rewriting.rst