fix "diff --check" whitespace anomalies

These aren't hurting anything functional, but they may make future diffs
more noisy. Let's clean them up now.

Author: peff

app/assets/javascripts/application.js

@@ -368,8 +368,8 @@ var AboutContent = {
 // Scroll to Top
 $('#scrollToTop').removeClass('no-js');
 $(window).scroll(function() {
-  $(this).scrollTop() > 150 
-    ? $('#scrollToTop').fadeIn() 
+  $(this).scrollTop() > 150
+    ? $('#scrollToTop').fadeIn()
     : $('#scrollToTop').fadeOut();
 });
 $('#scrollToTop').click(function(e) {

app/assets/stylesheets/layout.scss

@@ -404,7 +404,7 @@ table.benchmarks {
     }
   }
 }
-// scrollToTop 
+// scrollToTop
 .scrollToTop {
   @include border-radius(50px);
   display: none;
@@ -445,7 +445,7 @@ table.benchmarks {
     }
   }
 }
-.no-js{ 
+.no-js{
   &.scrollToTop {
     display: block;
   }
@@ -466,7 +466,7 @@ table.benchmarks {
   #content { width: 100%; }
   .inner { width: 100%; }
   #content-wrapper { padding: 0.8rem; }
-  
+
   #masthead {
     height: unset;
     .inner {
@@ -545,19 +545,19 @@ table.benchmarks {
           width: 100%;
           max-width: 300px;
         }
-        .unstyled { 
+        .unstyled {
           a {
           padding: 0.15rem 0;
           display: block;
           }
-        }  
+        }
         .chapter{
           h2 {
             display: flex;
-            align-items: center; 
+            align-items: center;
             a { padding-left: 5px; }
           }
-          ol { 
+          ol {
             li {
               display: flex;
               align-items: center;

app/assets/stylesheets/sidebar.scss

@@ -52,7 +52,7 @@ aside.sidebar.active {
     border: none;
     left: 0;
     width: 1.6rem;
-    &:focus + .sidebar {  
+    &:focus + .sidebar {
       @include responsive-sidebar-ui;
     }
   }

app/views/about/_small_and_fast.html.erb

@@ -137,7 +137,7 @@
         </tbody>
       </table>
     </div>
-    
+
     <p>
       It's also interesting to note that the size of the data on the client side
       is very similar even though Git also has every version of every file for the

app/views/shared/_sidebar.html.erb

@@ -1,5 +1,5 @@
 <button class="sidebar-btn"></button>
-<aside class="sidebar" id="sidebar">  
+<aside class="sidebar" id="sidebar">
   <nav>
     <ul>
       <li>