Webscrapbook

* Fixed script error when checking an HTML file containing a `link` tag without `rel` attribute when running the indexer.

* Fixed an issue that a sticky note cannot be dragged in Chromium >= 109.

* Fixed several possible errors for concurrent captures that saves as a folder to the default download directory.
* Adjusted the default retry times for saving a file to the backend server.

* Fixed a possible script error during handling `<noscript>` elements.

* Added `Capture mode` option for `Capture as` dialog.
* Improved UI for the sidebar:
* Whole title is now selected when entering the `Properties` dialog.
* Added support of renaming during folder or note creation.
* Improved automatic scrolling for keyboard navigation and item locating.
* Improved displaying effect when dragging an internal link or image of an item.
* Prevent some link-like elements from being opened unexpectedly.

* Updated classifiers and some documentation for the package.
* Fixed some packaging issues that may cause obsolete files be included.
* Some filename and coding style changes to meet the general conventions.