[erp5_web_renderjs_ui] Set listbox line background opacity

To allow viewing the wallpaper

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_nojqm_css.css

@@ -1427,7 +1427,7 @@ div[data-gadget-scope='erp5_searchfield'] div.search_parsed_value button {
   animation: fadein 0.2s ease-out;
 }
 .document_table table tbody tr:nth-child(even) {
-  background-color: #f2f2f2;
+  background-color: rgba(230, 230, 230, 0.65);
 }
 .document_table table tbody tr:hover,
 .document_table table tbody tr:active {

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_nojqm_css.xml

@@ -240,7 +240,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>976.13948.22130.494</string> </value>
+                <value> <string>978.16630.28355.65160</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -258,7 +258,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1559827452.3</float>
+                        <float>1567764069.82</float>
                         <string>UTC</string>
                       </tuple>
                     </state>

bt5/erp5_web_renderjs_ui/SkinTemplateItem/portal_skins/erp5_web_renderjs_ui/erp5css.less.txt

@@ -1675,7 +1675,7 @@ div[data-gadget-scope='erp5_searchfield'] {
 
       tr {
         &:nth-child(even) {
-          background-color: darken(@colorbackground, 5%);
+          background-color: fade(darken(@colorbackground, 10%), 65%);
         }
         &:hover, &:active {
           background-color: @colorblocklinkbackground