[v1.67.3] Add support for PieFed

Add support for PieFed.

Full changelog

• Add support for PieFed.
• Fix a bug where when you open a post, the spinner will appear to stutter for a moment.
• Fix a bug where pulling to refresh on the post screen will cause all comments to refresh even if they have not changed.
• Fix a bug where inline images will sometimes not load until the screen is refreshed.
• Fix a bug where "Prev" button doesn't load the page if pressed on page 2 when Infinity mode is off.

Update

Fix some bugs and re-releasing as v1.67.1

• Add some default PieFed instances to the login form auto-complete.
• Fix a bug where you can't log into PieFed with a password with more than 60 characters.

Update 2

Release should be fully rolled out now.

Update 3

Fix more bugs and releasing the fixes as v1.67.2.

• Fix a bug on PieFed where updating a comment/post will not refresh the comment/post.
• Fix a bug where uploading an image will fail with an error.
• Fix a bug on PieFed where opening a comment will sometimes error.
• Fix a bug on PieFed where Webp files cannot be uploaded.

Update 3

Fix more bugs and releasing the fixes as v1.67.3.

• Fix a bug that prevents updating posts/comments on instances that do not allow content to use the Undetermined language id.