Verification: added in supporting disabled/not ready styling for wizard nav + expandable height fix

lms/static/sass/elements/_controls.scss

@@ -168,6 +168,16 @@
   }
 }
 
+// disabled primary button - used for more manual approaches
+.btn-primary-disabled {
+  background: $m-gray-l2;
+  color: $white-t3;
+  pointer-events: none;
+  cursor: default;
+  pointer-events: none;
+  box-shadow: none;
+}
+
 // ====================
 
   // application: canned actions

lms/static/sass/views/_verification.scss

@@ -162,7 +162,7 @@
 
     .expandable-area {
       visibility: visible;
-      height: ($baseline*10.5);
+      height: ($baseline*12);
       opacity: 1.0;
     }
   }
@@ -957,6 +957,10 @@
 
     &.is-not-ready {
       background: $m-gray-l4;
+
+      .action-primary {
+        @extend .btn-primary-disabled;
+      }
     }
   }