Add bulk and single bookmark metadata refresh (#999)

* Add url create/edit query paramter to clear cache

* Add refresh bookmark metadata button in create/edit bookmark page

* Fix refresh bookmark metadata when editing existing bookmark

* Add bulk refresh metadata functionality

* Fix test cases for bulk view dropdown selection list

* Allow bulk metadata refresh when background tasks are disabled

* Move load preview image call on refresh metadata

* Update bookmark modified time on metadata refresh

* Rename function to align with convention

* Add tests for refresh task

* Add tests for bookmarks service refresh metadata

* Add tests for bookmarks api disable cache on check

* Remove bulk refresh metadata when background tasks disabled

* Refactor refresh metadata task

* Remove unnecessary call

* Fix testing mock name

* Abstract clearing metadata cache

* Add test to check if load page is called twice when cache disabled

* Remove refresh button for new bookmarks

* Remove strict disable cache is true check

* Refactor refresh metadata form logic into its own function

* move button and highlight changes

* polish and update tests

---------

Co-authored-by: Sascha Ißbrücker <sascha.issbruecker@gmail.com>

bookmarks/styles/bookmark-form.css

@@ -15,14 +15,23 @@
     visibility: hidden;
   }
 
-  & .form-group .clear-button {
-    display: none;
+  & .form-group .suffix-button {
     padding: 0;
     border: none;
     height: auto;
     font-size: var(--font-size-sm);
   }
 
+  & .form-group .clear-button,
+  & .form-group #refresh-button {
+    display: none;
+  }
+
+  & .form-group input.modified,
+  & .form-group textarea.modified {
+    background: var(--primary-color-shade);
+  }
+
   & .form-input-hint.bookmark-exists {
     display: none;
     color: var(--warning-color);