Revert "Update to UXPL 0.17 (grids compilation performance work)"

cms/static/sass/elements-v2/_header.scss

@@ -11,7 +11,7 @@
 
   header.primary {
     @include clearfix();
-    @include grid-container();
+    @include span(12);
     @include float(none);
     box-sizing: border-box;
     max-width: $fg-max-width;
@@ -31,7 +31,7 @@
   }
 
   .wrapper-r {
-    @include span(4, before);
+    @include span(4 last);
     @include text-align(right);
   }
 

cms/static/sass/programs/_views.scss

@@ -28,13 +28,8 @@
 
 .app-header {
   @include clearfix();
-  @include grid-row;
   border-bottom: 1px solid palette(grayscale, base);
   margin-bottom: 20px;
-
-  form {
-    @include span(12);
-  }
 }
 
 .course-container {