change footer section names to generic footer1, footer2, footer3 because we're going to CMS mode

app/assets/stylesheets/overrides.css.less

@@ -217,7 +217,7 @@ li.crop-hierarchy {
 // footer
 
 footer {
-  #contact, #about-growstuff, #policies {
+  #footer1, #footer2, #footer3 {
     text-align: left;
     padding-top: 1em;
     padding-bottom: 2em;

app/views/layouts/_footer.html.haml

@@ -1,9 +1,9 @@
 .navbar.navbar-default.navbar-bottom
   .container
     .row
-      .col-md-4#about-growstuff
+      .col-md-4#footer1
         != cms_snippet_content(:footer1)
-      .col-md-4#policies
+      .col-md-4#footer2
         != cms_snippet_content(:footer2)
-      .col-md-4#contact
+      .col-md-4#footer3
         != cms_snippet_content(:footer3)