Trim website metadata title and description

[luca1197]

Some sites seem to return metadata titles / descriptions with trailing or leading whitespaces, which should be unwanted in most if not all cases. This PR adds a .trim method call to the fetched values, which will remove these whitespaces.

The whitespaces are not shown in the bookmark list after it is saved, but they are being stored, so they are also still there when editing the bookmark.

One example would be Humble Bundle pages, e.g. this one: https://www.humblebundle.com/software/unreal-engine-ultimate-game-dev-assets-software

[sissbruecker]

Thanks, however the change here only affects the visual appearance of the placeholder, while the data returned from the scaper, and the data saved to the database, still contains the whitespace. It would make more sense to apply this fix to the scaper:

linkding/bookmarks/services/website_loader.py

Lines 25 to 36 in 3abdd92

	def load_website_metadata(url: str):
	title = None
	description = None
	try:
	page_text = load_page(url)
	soup = BeautifulSoup(page_text, 'html.parser')
	title = soup.title.string if soup.title is not None else None
	description_tag = soup.find('meta', attrs={'name': 'description'})
	description = description_tag['content'] if description_tag is not None else None
	finally:
	return WebsiteMetadata(url=url, title=title, description=description)

[luca1197]

Thank you for the feedback, I did not expect it would also fetch the data in the backend again. I implemented the trimming in the scraper (thank you for the snippet!) and tested it. Seems to work great.

[sissbruecker]

Added a test for the new trim behavior.