Add info for App.paths config.
Removed misplaced note.
Add info about App.paths.locales to migration guide.
Add info about Router::defaultRouteClass()
[fr] follow #2026
Try and address some pitfalls in the bookmarks tutorial.

Refs cakephp/cakephp#5200
Move defult route class section below section for custom route class.
Update getter/setter example for the Time class

Carbon uses `year`, `month` and `day` instead of `y`, `m` and `d` as currently documented.
Merge pull request #2028 from cakephp/bookmark-auth

Try and address some pitfalls in the bookmarks tutorial.
[fr] follow 806a80806a28228409fe228f8a7528ef786ba9a4d97446 & fix fr translation
[fr] follow #2022, 6d4f70d, e30d736 and #2028
Merge pull request #2026 from cakephp/3.0-misc

3.0 misc
[fr] Update Html.rst
Merge pull request #2029 from caBBAlainB/patch-21

[fr] Update Html.rst
Update html.rst
Use simpler language in the seo section

It's easier to understand and or translate for non-native readers.
Remove rankness
[fr] Update Text.rst
Update events.rst

Fixed a contradiction between this section and  the 4th paragraph of the Dispatching Events section.
Merge pull request #2030 from caBBAlainB/patch-22

[fr] Update Text.rst