STR-2013: Add Spanish translations

Files:
added: /struts/struts1/trunk/taglib/src/main/resources/org/apache/struts/taglib/logic/LocalStrings_es.properties (try)
added: /struts/struts1/trunk/taglib/src/main/resources/org/apache/struts/taglib/LocalStrings_es.properties (try)
added: /struts/struts1/trunk/taglib/src/main/resources/org/apache/struts/taglib/html/LocalStrings_es.properties (try)
added: /struts/struts1/trunk/taglib/src/main/resources/org/apache/struts/taglib/bean/LocalStrings_es.properties (try)