Adjust "export to spreadsheet" forms UI

customize.dist/src/less2/include/forms.less

@@ -117,9 +117,6 @@
                 margin-right: 5px;
             }
         }
-        .cptools {
-            vertical-align: middle;
-        }
 
         color: @cp_buttons-fg;
         border: 1px solid @cp_buttons-fg;

www/form/inner.js

@@ -2638,9 +2638,9 @@ define([
         });
 
         // Export in "sheet"
-        Messages.form_exportSheet = "Export in spreadsheet"; // XXX
+        Messages.form_exportSheet = "Export to spreadsheet"; // XXX
         var export2Button = h('button.btn.btn-primary', [
-            h('i.fa.fa-download'),
+            h('i.cptools.cptools-sheet'),
             Messages.form_exportSheet
         ]);
         $(export2Button).appendTo($controls);