Refactor: ActionServletWrapper now properly supports modular configuration of Struts

  * Removed message.properties, Struts is now configured using renderers.json
  * For renderers.json reference, see the ActionServletConfiguration class
  * Also refactored RenderersRequestProcessors to allow different RequestProcessors
    per Struts module
  * Fixed ConfigurationReader to once again work on Tomcat
Instead of extending RequestRewriterFilter, one can now dynamically register rewriters
AutoCompleteProvider is now parameterized on the return type

  * Also allow renderer usages to define the provider as a property
ExceptionHandlers now actually receive the exception to be handled
I18N filter now gets its values from I18N
WebFragment changed so that filters run after bennu-core's
Removed Money renderer declarations (as Money has been moved out of bennu-renderers)
Merge pull request #1 from jcarvalho/feature/develop-bennu2-ff2

Making bennu-renderers compatible with Fenix