Add a note about requirements for SQL Server connection.
Add error to the Datasource Doc for Sqlserver
Update Datasource Doc with more detailed error information
Controller Callback Links

Linked the controller callbacks.

I removed the afterRender() method because it is not a controller
callback.  This method is found in the helper class.
Fix code overflows in the Tutorials and Examples section.
Fix overflows in the Appendices section.
Links for Controller

I linked all of the methods/attributes/properties that I could find in
controller.rst
Merge pull request #945 from Ayb3x/fix-code-line-overflows-appendices

Fix overflows in the Appendices section
Merge pull request #944 from Ayb3x/fix-code-line-overflows-tutorials-and-examples

Fix code overflows in the Tutorials and Examples section
Type Fix

Removed $
Merge pull request #946 from ezrabynx/2.4-link-fixes

2.4 link fixes
Update components.rst

translate some line
Create helpers.rst

start of translation
orientée -> orientée objet
Erreur de correction (instance -> occurence)
Merge pull request #950 from dorian-marchal/patch-1

orientée -> orientée objet
Merge pull request #951 from dorian-marchal/patch-2

Erreur de correction (instance -> occurence)
Use exec() instead of ``.

Fixes #952
[ja] Follow c9574a3cae
[ja] Follow #946