Adding a database cookbook with the topics unit tests and config_test.yml covered
Making some minor bugfixes to the testing/database cookbook. Added different code examples
[SwiftMailerHandler] Fixed 'method' option name
[#2212] Adding a note about JSON hijacking
Merge pull request #2407 from Sgoettschkes/issue480

[WIP] Adding a testing/database cookbook
[#2407] Minor tweaks to testing with the database entry
Merge pull request #2461 from pborreli/patch-1

[WCM][SwiftMailerHandler] Fixed 'method' option name
Fixing typo
Merge branch '2.0' into 2.1
Merge branch '2.1' into 2.2

Conflicts:
	components/http_foundation/introduction.rst
Merge branch '2.2'