changes `$quote-gray` to `$secondary-text`

app/assets/stylesheets/framework/variables.scss

@@ -24,7 +24,7 @@ $gl-gray: #5a5a5a;
 $gl-padding: 16px;
 $gl-padding-top:10px;
 $gl-avatar-size: 46px;
-$quote-gray: #7f8fa4;
+$secondary-text: #7f8fa4;
 /*
  * Color schema

app/assets/stylesheets/pages/issues.scss

@@ -146,6 +146,6 @@ form.edit-issue {
 }
 .issue-closed-by-widget {
-  color: $quote-gray;
+  color: $secondary-text;
   margin-left: 52px;
 }
\ No newline at end of file