Added enviromental variable tip for debug and deployment
Clarified Containable filtering limitations

It isn't clear when using containable that an INNER JOIN isn't happening when filtering by a deeper level association, when it really is only affecting the subquery. I added an explanation and an example.
Further clarification

Added an example to return the expected results.
Fixed SysloLog typo
Merge pull request #750 from derekperkins/patch-2

Fixed SysloLog typo
[fr] Follow #750

Fixed SysloLog typo
Fix CakePlugin::loadAll() example

Global options need to be passed as a array of array in CakePlugin::loadAll method.
Merge pull request #752 from CauanCabral/patch-1

Fix CakePlugin::loadAll() example
[fr] Follow #752 & update 2.3 migration guide

Fix CakePlugin::loadAll() example & update 2.3 migration guide
[fr] Fix typo in 2.4 migration guide
Temporary fix for missing pdf file
Remove unicode bytes that are blowing up PDF generation

pdflatex does not like these bytes.
REmoving characters that are killing PDF generation
Merge pull request #740 from derekperkins/patch-1

Clarified Containable filtering limitations
Move param() to the correct class.
Update html.rst

Clarify how to use named parameters in the "link" method of HTMLHelper.
Merge pull request #754 from NOSLOW/patch-1

Update html.rst
Breaking too long line
Update Model/Behavior callback documentation to be truthful.
Merge pull request #756 from bar/update-callbacks

Update Model/Behavior callback documentation to be truthful.