drupal integration - revised general page background for shorter content pages, small visual tweaks to footer

lms/static/sass/base/_base.scss

@@ -1,4 +1,4 @@
-html, body {
+body {
   background: rgb(250,250,250);
   font-family: $sans-serif;
   font-size: 1em;

lms/static/sass/multicourse/_account.scss

@@ -3,6 +3,7 @@
 
 // page-level
 .view-register, .view-login, .view-passwordreset {
+  background: $white;
 
   .content-wrapper {
     background: $m-gray-l;

lms/static/sass/shared/_footer.scss

@@ -1,4 +1,5 @@
 .wrapper-footer {
+  @include box-shadow(0 -1px 5px 0 rgba(0,0,0, 0.1));
   border-top: 1px solid tint($m-gray,50%);
   padding: 25px ($baseline/2) ($baseline*1.5) ($baseline/2);
   background: $white;