Issue character encoding master

this is solving encoding issue with javascript i18n messages as by default (from include.jsp) all spring messages have htmlEscape="true" which must be desactivated on javascript code, also it solves some other problems like that in some jsp where tag <c:out is used with jstl fonction fn:escapeXml whereas it's useless as tag c:out do that by default.

This PR should be an example to solve the same problems on weatherPortlet and email-preview portlet.