* BAEL-1412 add java 8 spring data features
* BAEL-21 new HTTP API overview
* BAEL-21 fix executor
* BAEL-1432 add custom gradle task
* BAEL-1567 add samples of cookie and session in serlvet
* BAEL-1567 use stream api
* BAEL-1567 fix optional
* BAEL-1679 add query annotation jpa spring data
* BAEL-1679 added new junits
* BAEL-1679 use assertJ, use givenWhenThen naming convention
* BAEL-1679 move query annotation examples to persistence modules
* BAEL-1679 fix formatting
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