Delete redundant urldecode

[soudis]

As discussed in #6822 the urdecode is redundant and creates problems (especially with the discoursesso app)

[blizzz]

I cannot reproduce it on current master, the link as described ("https://nextcloud13.local/index.php/apps/activity/?filter=b%0Ay") would bring me to activities, no error page. I guess we can close that, @soudis?

[soudis]

I cannot reproduce it on current master, the link as described ("https://nextcloud13.local/index.php/apps/activity/?filter=b%0Ay") would bring me to activities, no error page. I guess we can close that, @soudis?

Sorry, I was not precise enough, you need to be logged out, because this redirects you to:

https://.../index.php/login?redirect_url=/index.php/apps/activity/%3Ffilter%3Db%250Ay

which then leads to the error / blank page.

[ChristophWurst]

-> #13137