Added tiles 3 jars as additional dependencies in spring-boot-dependencies pom, and a sample tiles based project

Added in tiles 3.0.1 jars as additional dependencies in the dependencyManagement section of spring-boot-dependencies project. This will enable spring-boot based applications to utilize tiles as a layout templating option.

I have added in a sample project, heavily based on the existing thymeleaf based project, but utilizing tiles for  the layout instead.