Ejemplos en Español [Main Task]

The idea is that we could potentially do examples and documentation in Spanish.  Perhaps:

 - http://tomee.apache.org/tomee-8.0/es/docs/
 - http://tomee.apache.org/tomee-8.0/es/ejemplos/

First note is that how we organize the files in the git repo and how we organize them on the website can be completely different.  We use the following code to collect all the examples together and do various things to them:

 - https://github.com/apache/tomee-site-generator/blob/master/src/main/java/org/apache/tomee/website/Examples.java#L42

Right now it will do a copy and rename, for example:

 - https://github.com/apache/tomee/blob/master/examples/cdi-request-scope/README.md
 - http://tomee.apache.org/tomee-8.0/examples/cdi-request-scope.html

We could theoretically do something as simple as this:

 - https://github.com/apache/tomee/blob/master/examples/cdi-request-scope/README_es.md
 - http://tomee.apache.org/tomee-8.0/es/ejemplos/cdi-request-scope.html

I.e. make a new file next to the original, then update our copying logic to put the prefix in the path.