Made more explicit links styles in headers

FEA: ItEr75S04BugFixing

libreplan-webapp/src/main/webapp/common/css/libreplan.css

@@ -108,6 +108,7 @@ a.sub_menu:hover {
     padding-right: 15px;
     color: #3195D7;
     font-weight: bold;
+    cursor: default;
 }
 
 .cerrar_sesion {
@@ -176,6 +177,10 @@ a.sub_menu:hover {
     text-decoration: none;
 }
 
+.help-link a:hover span {
+    text-decoration: underline;
+}
+
 .help-link a span {
     position: relative;
     top:-6px;

libreplan-webapp/src/main/webapp/common/css/libreplan_zk.css

@@ -946,6 +946,7 @@ span.z-dottree-line {
 
 .migas_linea {
     border: 0px;
+    cursor: default;
 }
 
 /* ---- Perspectives ------ */

libreplan-webapp/src/main/webapp/common/layout/_customMenu.zul

@@ -52,7 +52,7 @@
     <n:td class="migas_linea"><n:table border="0" cellspacing="0" cellpadding="0">
         <n:tr class="ruta">
           <n:td width="10" height="25"></n:td>
-          <n:td><n:a href="${contextPath}/" class="ruta"><n:strong>${i18n:_('START')}</n:strong></n:a></n:td>
+          <n:td><n:strong>${i18n:_('START')}</n:strong></n:td>
           <n:td width="5"></n:td>
           <n:td><hbox id="breadcrumbs"></hbox>
           <hbox>