Tests that the changes view highlights diffs correctly.

- .will-be-deleted-but-will-show-modified-because-first-line {
-     width: 10px;
-     height: 10px;
- }
- 
  .stays-the-same {
      font-size: 10px;
      font-family: sans-serif;
  }
  
- .will-be-modified {
-     height: 100000%;
+ .was-modified {
+     width: 0%;
  }
  
  .stays-the-same2 {
      font-size: 10px;
      font-family: Arial, Helvetica, sans-serif;
  }
  
+ .was-added {
+     color: #00F;
+     color: #008;
+     color: #000;
+ }
+ 
  .stays-the-same3 {
      font-size: 15px;
      font-family: Arial, Helvetica, sans-serif;
  }
  
  .will-lose-properties {
      background: #000;
-     background: #400;
-     background: #800;
-     background: #B00;
      background: #F00;
  }