Move projects to better reflect the way that Spring Boot is released.
The following projects are under `spring-boot-project`:
- `spring-boot`
- `spring-boot-autoconfigure`
- `spring-boot-tools`
- `spring-boot-starters`
- `spring-boot-actuator`
- `spring-boot-actuator-autoconfigure`
- `spring-boot-test`
- `spring-boot-test-autoconfigure`
- `spring-boot-devtools`
- `spring-boot-cli`
- `spring-boot-docs`
See gh-9316
This commit raises the minimum supported version of Thymeleaf to
3.0.x. It also upgrades Spring Social to a version that is compatible
with Thymeleaf 3.
Closes gh-7450
Closes gh-6258
See gh-7885
Before this change if Layout dialect not available then the nested class is
loaded and barfs because it depended on the layout dialect (in a
@ConditionalOnClass annotation).