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/services/website_loader.py

@@ -27,10 +27,20 @@ class WebsiteMetadata:
         }
 
 
+def load_website_metadata(url: str, ignore_cache: bool = False):
+    if ignore_cache:
+        return _load_website_metadata(url)
+    return _load_website_metadata_cached(url)
+
+
 # Caching metadata avoids scraping again when saving bookmarks, in case the
 # metadata was already scraped to show preview values in the bookmark form
 @lru_cache(maxsize=10)
-def load_website_metadata(url: str):
+def _load_website_metadata_cached(url: str):
+    return _load_website_metadata(url)
+
+
+def _load_website_metadata(url: str):
     title = None
     description = None
     preview_image = None