Empty title guid or first words

[math-GH]

Closes #6218

If a feed has no title then the GUID/URL is shown (example feed: https://mastodon.social/tags/FreshRSS.rss):

After:
show the first 75 characters. (config via configs, if necessary)

Pull request checklist:

• clear commit messages
• code manually tested

[Alkarex]

I would rather avoid a new option and just have one behaviour, which works well.
First we need to distinguish the Web UI and the API.
In the Web UI, I think it would be fine to:

• Show the title if not blank
• Otherwise show the first words if not blank
• Otherwise show the GUID

[Frenzie]

I would rather avoid a new option and just have one behaviour, which works well.

Though imo the current behavior works better… well, besides on such a Mastodon feed with meaningless ids.

[math-GH]

Now it is simplified

[thecptrgod]

That's a good idea for what the interface should look like. (Sorry this is late...been slammed all week.)

[Frenzie]

Though imo the current behavior works better… well, besides on such a Mastodon feed with meaningless ids.

On second thought the overlap of URLs looking nice combined with missing titles is probably minuscule.