[Intl] made RegionBundle and LanguageBundle merge fallback data when using a country-specific locale
[PropelBridge] PropelTypeGuesser can now recognize columns by their phpName

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Until now, the `PropelTypeGuesser` could only find columns by their
name.
Example: `created_at` was recognized but `createdAt` wasn't.

This PR adds the ability to match column's phpNames (in a
case-insensitive way).
Added option to show controllers optionally in the router:debug command
merged branch peterrehm/router-command (PR #8657)

This PR was squashed before being merged into the master branch (closes #8657).

Discussion
----------

Added option to show controllers optionally in the router:debug command

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Added option to show controllers in the router debug command as a convenience function.

    app/console router:debug --show-controllers

Commits
-------

6fd32f3 Added option to show controllers optionally in the router:debug command
[Form] Removed usage of the ChoiceList::getIndicesFor*() methods where they don't offer any performance benefit
[Form] Fixed ChoiceList::get*By*() methods to preserve order and array keys
[Form] Fixed expanded choice field to be marked invalid when unknown choices are submitted
[Form] Improved test coverage of ChoiceList classes
[Form] Fixed FormValidator::findClickedButton() not to be called exponentially
[Validator] The default option name can now be omitted when defining constraints as annotations
[Form] Removed usage of the ChoiceList::getIndicesFor*() methods where they don't offer any performance benefit
[Form] Fixed ChoiceList::get*By*() methods to preserve order and array keys
[Form] Fixed expanded choice field to be marked invalid when unknown choices are submitted
[Form] Improved test coverage of ChoiceList classes
[Form] Removed usage of the ChoiceList::getIndicesFor*() methods where they don't offer any performance benefit
[Form] Fixed ChoiceList::get*By*() methods to preserve order and array keys
[Form] Fixed expanded choice field to be marked invalid when unknown choices are submitted
[Form] Improved test coverage of ChoiceList classes
[DoctrineBridge] Improved test coverage of EntityChoiceList
[DoctrineBridge] Improved test coverage of EntityChoiceList