move loading spinner to bottom right on mobile

less/modules/nprogress.less

@@ -1,4 +1,3 @@
-/* Make clicks pass-through */
 #nprogress {
   pointer-events: none;
 }
@@ -15,7 +14,6 @@
   height: 2px;
 }
 
-/* Fancy blur effect */
 #nprogress .peg {
   display: block;
   position: absolute;
@@ -30,7 +28,6 @@
           transform: rotate(3deg) translate(0px, -4px);
 }
 
-/* Remove these to get rid of the spinner */
 #nprogress .spinner {
   display: block;
   position: fixed;
@@ -39,6 +36,15 @@
   right: 15px;
 }
 
+@media (max-width: @screen-xs-max) {
+  #nprogress .spinner {
+    bottom: 15px;
+    right: 15px;
+    top: initial;
+  }
+}
+
+
 #nprogress .spinner-icon {
   width: 18px;
   height: 18px;