Clarify and correct the exception rendering docs.

Refs #2112
fix Correction StringTemplateTrait path
Merge pull request #2116 from zoghal/3-patch-1

fix Correction StringTemplateTrait path
Correct typo in bake docs
Merge pull request #2115 from antograssiot/3.0

[fr] 3.0 Orm reorg
[fr] review associations & behaviors
[fr] review database-basics
[fr] review deleting-data
[fr] fix typos after comments
[fr] review entities
Undocument the session component.

Remove the session component from the docs as it is deprecated.

Refs #1985
[fr] start query-builder till line 209
[fr] follow en version in #2119
Merge pull request #2119 from cakephp/remove-session-component

Undocument the session component.
Merge pull request #2114 from cakephp/clarify-error-controller

Clarify and correct the exception rendering docs.
Correct wording.
quelques corrections
[fr] Updating internationalization-and-localization.rst

Mise à jour de Language Files & Setting the Default Locale
Une idée pour la traduction de Runtime ?
Update internationalization-and-localization.rst
[fr] internationalization-and-localization.rst

Correction d'un terme