Start updating docs for controller::initialize()
Rename add(Component|Behavior) to load(Component|Behavior)

Refs cakephp/cakephp#4635
Add docs for routing scope with default args.
Add example of path mapping for loading vendor namespaced plugins.
[fr] add router scope
delete 'plugins' folder added by master->3.0 merge
Merge pull request #1742 from cakephp/router-scope

Add docs for routing scope with default args.
Update routing.rst

Added a hint for 'Nested Resources'.
Update routing.rst
[fr] fix errors introduced by master->3.0 merge
update formHelper
Merge pull request #1743 from leungpeng/patch-3

Update routing.rst
Revert change to addBehavior()
[fr] - first helpers review
[fr] review helpers + typos
remove duplicated content + typos
update namespace position
update line lenght
Merge pull request #1747 from cakephp/3.0-corrections

3.0 more doc updates
Merge pull request #1748 from cakephp/3.0-fr-review-helpers

3.0 French translation helpers chapter