Handle obfuscated share links

[pts314]

Adds /r/:sub/s/:id pattern in main.rs to follow obfuscated share links and strips share info. As noted in the attached issue, it could be better by adding a warning, but this at least will continue to allow things to function in the mean time

Resolves: #859

[kylrth]

Deployed to https://libreddit.kylrth.com, works as promised

[mikupls]

Thanks for the work!

Does it work though?
I get Bad response from reddit.com when I try to use a share link.

My understanding is that Url::parse expects an absolute path, but we give it a relative one in the current code.
I had to apply this change to make it work for me: mikupls@9637a4a
This is not a nice solution because now the libreddit url is cluttered with share parameters (seemingly what parsed_path.path() tried to prevent).

[pts314]

Thanks for the digging! I realized that we can just split after we have just the path, so that's what it's doing now

[kylrth]

Just deployed this to https://libreddit.kylrth.com/, appears to work