erp5_web_renderjs_ui: Set label color or required field to black

to make the difference with other fields more visible

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_nojqm_css.css

@@ -1166,6 +1166,7 @@ div[data-gadget-scope='header'] .ui-header ul {
 }
 .gadget-content .required > .ui-field-contain > label {
   font-weight: bold;
+  color: #1F1F1F;
 }
 .gadget-content .invisible > .ui-field-contain > label {
   display: none;

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_nojqm_css.xml

@@ -230,7 +230,7 @@
                   </item>
                   <item>
                       <key> <string>actor</string> </key>
-                      <value> <string>zope</string> </value>
+                      <value> <string>georgios.dagkakis</string> </value>
                   </item>
                   <item>
                       <key> <string>comment</string> </key>
@@ -244,7 +244,7 @@
                   </item>
                   <item>
                       <key> <string>serial</string> </key>
-                      <value> <string>979.63704.30155.63556</string> </value>
+                      <value> <string>980.28021.30830.63778</string> </value>
                   </item>
                   <item>
                       <key> <string>state</string> </key>
@@ -262,7 +262,7 @@
                           </tuple>
                           <state>
                             <tuple>
-                              <float>1574438679.87</float>
+                              <float>1579787106.93</float>
                               <string>UTC</string>
                             </tuple>
                           </state>

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

@@ -1354,6 +1354,7 @@ div[data-gadget-scope='header'] .ui-header {
     // backward-compatibility: support for ERP5 field class defined in formulator configuration
     // inform user that the field is needed by contraint, but do not prevent him to save the value
     font-weight: bold;
+    color: @black;
   }
   .invisible > .ui-field-contain > label {
     // used to hide the label of a formbox