Migrate to Thymeleaf 3.0

[php-coder]

References:

• http://forum.thymeleaf.org/Thymeleaf-3-0-is-here-td4029676.html
• http://www.thymeleaf.org/doc/articles/thymeleaf3migration.html
• http://forum.thymeleaf.org/Thymeleaf-3-0-1-JUST-PUBLISHED-td4029852.html
• http://forum.thymeleaf.org/Thymeleaf-3-0-2-JUST-PUBLISHED-td4029985.html

[php-coder]

To simplify migration it's better to do it after updating to Spring Boot 1.4 (#413)

[php-coder]

Blocked by heneke/thymeleaf-extras-togglz#8

[php-coder]

Spring Boot 1.4 & Thymeleaf 3: need to set spring.thymeleaf.mode: HTML property (Spring Boot GH 6552)

[php-coder]

Use auto-configuration for Thymeleaf 3 (Spring Boot GH 4393)