Minor grammatical correction
Cookbook article about custom route loaders
Processed feedback by @lazyhammer and @WouterJ
Added use cases and explained the loader resolver
Added some references to bundles using route loaders
add note on service parameters regarding ScopeWideningInjectionException
fix backticks with double backticks
remove unnecessary text
Issue #2378. Minor additions. Implemented suggestions by WouterJ.
change note to caution and simplify text
add notes on collection and entity field types regarding collections of entities and cookbook article
fix small typo - missing word
Merge branch 'issue_1707' of github.com:joelclermont/symfony-docs into joelclermont-issue_1707

Conflicts:
	book/service_container.rst
Merge pull request #2428 from joelclermont/issue_1566

add notes on collection and entity field types
Add example server configuration

| Q             | A
| ------------- | ---
| Doc fix?      | no
| New docs?     | yes
| Applies to    | all
| Fixed tickets | #578 #1705
example webserver configs
[#2410] Minor tweaks for new web server documentation
Merge pull request #2330 from caponica/class_extension_typo

Minor grammatical correction
Merge pull request #2339 from matthiasnoback/cookbook_custom_route_loader

[Cookbook] [Routing] Article about custom route loaders
[#2339] Proofreading the nice new custom route loader cookbook article