Spring MVC should server static resources (*.html, ...) located in src/main/webapp instead of returning "404 Not Found"

Transactions should be on the root application context (or Hibernate will not be able to persist entities)

Use ContentNegotiationManagerFactoryBean
Use URI variables in redirect URLs

In that way we don't need a dedicated config file for the Service layer

- web.xml is now simpler
- mvc config file has been split into 2 files

There is still some polish up to be done.

- so we don't use JSP scriptlets anymore
- Used input from http://www.thymeleaf.org/petclinic.html
- also some improvements to SimpleMappingExceptionResolver make it
easier to get the error message from the JSP

- removed unneeded Spring config files
- moved i18n files to a dedicated folder

- commented out all Spring MVC config related to content negociation so
the app works well in HTML for now
- Integrated Bootsrap look&Feel in the 'vets' section

+ added on the fly db configuration to all contexts
+ removed schema numbers to always pick the latest version

SPR-6448
+ commit the gross of the files
+ added maven pom