Allow updated UI on pages other than promoted/edit_promo.

r2/r2/public/static/css/reddit.less

@@ -5837,7 +5837,7 @@ div #campaign-field {
     }
 }
 
-.campaign {
+.sponsored-page {
     .checkbox-group,
     .radio-group,
     .form-group,
@@ -5914,6 +5914,10 @@ div #campaign-field {
 }
 
 .create-promotion {
+    
+}
+
+.sponsored-page {
     @bg-color: lighten(#cee3f8, 5%);
     width: 800px;
     margin: auto;

r2/r2/templates/promotelinkedit.html

@@ -31,7 +31,7 @@
 
 ${unsafe(js.use('sponsored'))}
 
-<div class="create-promotion">
+<div class="create-promotion sponsored-page">
   <div class="dashboard creative-dashboard">
     <header>
       <h2>${_("creative dashboard")}</h2>

r2/r2/templates/promotelinknew.html

@@ -25,7 +25,7 @@
 <%namespace name="utils" file="utils.html"/>
 
 
-<div class="create-promotion">
+<div class="create-promotion sponsored-page">
   <div class="dashboard">
     <header>
       <h2>new promotion</h2>