Merge pull request #1821 from WouterJ/patch-7

[Cookbook/configuration] Changed warning box to caution
Merge pull request #1825 from greg0ire/security_cookbook_pass

Security cookbook pass
[#1825] A few tweaks
Fixed example parse error
Merge branch '2.0' into 2.1

Conflicts:
	book/templating.rst
Merge branch 'cookbook_routing_service_container_parameters' of github.com:nomack84/symfony-docs into nomack84-cookbook_routing_service_container_parameters
[#1834] Tweaks to new entry about routing parameters
Merge pull request #1835 from WouterJ/patch-8

Fixed format (added colon in versinoadded block)
Merge pull request #1837 from ajessu/patch-2

[Components][DomCrawler] Remove protected method getRawUri()
Update components/http_foundation/session_configuration.rst

updated some typos and formatting
Merge pull request #1843 from hhamon/templating_component_fix

[components] [templating] fixed wrong namespace.
Setting the option property_path to false was deprecated - use mapped
Merge pull request #1810 from stof/single_command_tool

Added a cookbook entry about building single command applications
[#1810] Adding a Learn More section to the console introduction

This introduces the idea of having short "intro" chapters for each component, followed by lots of related docs. This is a model that we largely want to follow in the components and in the framework book itself (we also need more in-context cross-linking between documents).

I've also updated a few document titles to be more descriptive.
Option cascade_validation must be added to TaskType
[#1809] Adding more clarification to which file is being modified
Update cookbook/assetic/asset_management.rst

Fix wrong word: these -> this.
Merge branch 'issue_814_20' of github.com:pvanliefland/symfony-docs into pvanliefland-issue_814_20
[#1806] Minor tweaks to new form type extension entry
Merge branch '2.0' into 2.1