[erp5_web_renderjs_ui] Add a box shadow on the page submit button

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_nojqm_css.css

@@ -1013,7 +1013,9 @@ div[data-gadget-scope='header'] .ui-header ul {
   border-radius: 0.325em;
   border-width: 1px;
   border-style: solid;
+  border-color: #FF6600;
   min-width: 8em;
+  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
   text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
 }
 .gadget-content input[type='submit']:hover,
@@ -1032,7 +1034,9 @@ div[data-gadget-scope='header'] .ui-header ul {
   border-radius: 0.325em;
   border-width: 1px;
   border-style: solid;
+  border-color: #767676;
   min-width: 8em;
+  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
 }
 .gadget-content button[name='action_update']:hover,
 .gadget-content button[name='action_update']:focus {

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_nojqm_css.xml

@@ -246,7 +246,7 @@
                   </item>
                   <item>
                       <key> <string>serial</string> </key>
-                      <value> <string>979.63643.1243.63317</string> </value>
+                      <value> <string>979.63653.41704.8345</string> </value>
                   </item>
                   <item>
                       <key> <string>state</string> </key>
@@ -264,7 +264,7 @@
                           </tuple>
                           <state>
                             <tuple>
-                              <float>1574431058.05</float>
+                              <float>1574431490.02</float>
                               <string>UTC</string>
                             </tuple>
                           </state>

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

@@ -109,6 +109,8 @@
 @invalid-border: @border-size @border-type @coloraccent;
 @invalid-box-shadow: 0 0 @double-margin-size @coloraccent;
 
+@button-box-shadow: 0 2px 4px rgba(0, 0, 0, 0.20);
+
 @foreground-text-shadow: 0 1px 2px rgba(0, 0, 0, 0.20);
 
 @quarter-margin-size: 1.5pt;
@@ -1167,9 +1169,12 @@ div[data-gadget-scope='header'] .ui-header {
   border-radius: @radius;
   border-width: 1px;
   border-style: solid;
+  border-color: @backgroundcolor;
 
   min-width: 8em;
 
+  box-shadow: @button-box-shadow;
+
   &:hover, &:focus {
     background-color: lighten(@backgroundcolor, 10%);
   }