Quote display fixes

[Jacocococo]

This fixes a few issues with displaying quoted posts:

• Expanding long posts didn't work well and opening the thread would collapse it again (I just made it so refreshing a thread doesn't collapse the expanded posts as that seems to be the expected behavior anyways)
• Quote posts wouldn't show up in notifications i.e. when tagged in a quote post
• Part of the quoted post could still be shown after collapsing a content warning in some cases

[LucasGGamerM]

Thank you for your work on this, you are awesome!