Fix basic layout issues on small screens for app view

src/theme.scss

@@ -448,6 +448,11 @@ multiselect {
 // ----------------------------
 
 .app-configure {
+    // Ensure back link is fully visible
+    @media(max-width:1200px) {
+        margin-top: 60px;
+    }
+
     h3 {
         margin-top: 0;
     }
@@ -456,12 +461,14 @@ multiselect {
         min-height: 349px;
     }
 
-    .col-md-2 {
-        padding-right: 0;
-    }
+    @media(min-width:768px) {
+        .col-sm-2 {
+            padding-right: 0;
+        }
 
-    .col-md-8 {
-        padding-left: 0;
+        .col-sm-8 {
+            padding-left: 0;
+        }
     }
 
     .back-to-apps-link {
@@ -469,6 +476,7 @@ multiselect {
         left: 0;
         top: 45px;
         padding: 20px;
+        z-index: 20;
 
         &:hover,
         &:focus {