[renderjs_ui] Mark obsolete CSS classes obsolete so nobody use them

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_nojqm_css.css

@@ -918,6 +918,9 @@ div[data-gadget-scope='header'] .ui-header ul {
 .gadget-content {
   padding: 24pt;
   padding-top: 66pt;
+  /* Disclaimer: It is here only for backward-compatibility! Don't rely on
+                 this class because it will be removed.
+                 It was used to force horizontal rendering of fields inside FormBox. */
   /*
   @media @smartphone {
     .ui-field-contain {
@@ -1050,6 +1053,9 @@ div[data-gadget-scope='header'] .ui-header ul {
   .gadget-content .ui-field-contain > label {
     flex: 1;
     color: #777777;
+    /* Disclaimer: It is here only for backward-compatibility! Don't rely on
+                       this class because it will be removed.
+                       It was used to hide the label of a FormBox. */
   }
   .gadget-content .ui-field-contain > label.invisible {
     display: none;

bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_nojqm_css.xml

@@ -242,7 +242,7 @@
             </item>
             <item>
                 <key> <string>serial</string> </key>
-                <value> <string>961.17799.14348.6348</string> </value>
+                <value> <string>961.19210.8471.60620</string> </value>
             </item>
             <item>
                 <key> <string>state</string> </key>
@@ -260,7 +260,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1502199260.7</float>
+                        <float>1502444264.19</float>
                         <string>UTC</string>
                       </tuple>
                     </state>

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

@@ -1116,7 +1116,9 @@ div[data-gadget-scope='header'] .ui-header {
       width: 100%;
     }
   }
-
+  /* Disclaimer: It is here only for backward-compatibility! Don't rely on
+                 this class because it will be removed.
+                 It was used to force horizontal rendering of fields inside FormBox. */
   .horizontal_align_form_box .ui-field-contain > div {
     display: block-inline;
   }
@@ -1210,6 +1212,9 @@ div[data-gadget-scope='header'] .ui-header {
       & > label {
         flex: 1;
         color: @grey;
+        /* Disclaimer: It is here only for backward-compatibility! Don't rely on
+                       this class because it will be removed.
+                       It was used to hide the label of a FormBox. */
         &.invisible {
           display: none;
         }