Improve UI for list of changed files

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/assets/stylesheets/pages/commit.scss

@@ -49,30 +49,33 @@
 }
 
 .file-stats {
+  ul {
+    list-style: none;
+    margin: 0;
+    padding: 10px 0;
+
+    li {
+      padding: 3px 0px;
+    }
+  }
   .new-file {
     a {
-      color: #090;
-    }
-    i {
-      color: #1BCF00;
+      color: $gl-success;
     }
   }
   .renamed-file {
-    i {
-      color: #FE9300;
+    a {
+      color: $gl-warning;
     }
   }
   .deleted-file {
     a {
-      color: #B00;
-    }
-    i {
-      color: #EE0000;
+      color: $gl-danger;
     }
   }
   .edit-file{
-    i{
-      color: #555;
+    a {
+      color: $gl-text-color;
     }
   }
 }