Add option to display URL below title (#365)

* Add feature to display URL below title

* updates pre-merging

* Bookmark URL Tests & solving pending migration

* cleanup after rebase

* add test for updating setting

---------

Co-authored-by: Bahadir Parmaksiz <bahadir.parmaksiz@tmconnected.com>
Co-authored-by: Sascha Ißbrücker <sascha.issbruecker@gmail.com>

bookmarks/styles/bookmarks.scss

@@ -64,6 +64,10 @@ ul.bookmark-list {
     vertical-align: text-top;
   }
 
+  .url-display {
+    color: $secondary-link-color;
+  }
+
   .description {
     color: $gray-color-dark;
 

bookmarks/styles/variables-dark.scss

@@ -21,6 +21,8 @@ $link-color: $primary-color !default;
 $link-color-dark: darken($link-color, 5%) !default;
 $link-color-light: $link-color !default;
 
+$secondary-link-color: rgba(168, 177, 255, 0.73);
+
 $alternative-color: #59bdb9;
 $alternative-color-dark: #73f1eb;
 

bookmarks/styles/variables-light.scss

@@ -2,3 +2,5 @@ $html-font-size: 18px !default;
 
 $alternative-color: #05a6a3;
 $alternative-color-dark: darken($alternative-color, 5%);
+
+$secondary-link-color: rgba(87, 85, 217, 0.64);