Including Bootstrap and changing servlet configuration to allow mapping bootstrap css,js and fonts

This commit intent to integrate boostrap at the OLAP project.
I intent to include the bootstrap files and, with modifications of spring-context.xml file, allow the bootstrap styles be loaded by browser.  This example was used to make this modifications : http://sudarsan-techzone.blogspot.com.br/2013/09/how-to-include-external-css-file-in-jsp.html