AfterSave declaration was not compatible with Model class in code example

Copy paste of the example gave an error, this changes prevents the error.

Error: Declaration of Category::afterSave() should be compatible with Model::afterSave($created, $options = Array)
Merge pull request #855 from lucfranken/patch-1

AfterSave declaration was not compatible with Model class in code exampl...
correct backticks
add missing brackets
Added strict parameter to inList data validation rule

http://api.cakephp.org/2.4/class-Validation.html#_inList
[fr] Follow #855

AfterSave declaration was not compatible with Model class in code
exampl..
[fr] Follow 39d42cf76bff2ec1862613f011289b39b1f54c77

correct backticks
[fr] Follow 586c51b3da70b89c4cff897929997f84b2fa9bb4

add missing brackets
[fr] Follow 9c4b366df347e6abac72856bddfc9663a7174bc1

Added strict parameter to inList data validation rule