FIX: URLs containing two # would fail to work

Some URLs in browsers are non compliant and contain twos `#` this commit adds
special handling for this edge case by auto encoding any fragments containing `#`

lib/url_helper.rb

@@ -1,5 +1,20 @@
 class UrlHelper
 
+  # At the moment this handles invalid URLs that browser address bar accepts
+  # where second # is not encoded
+  #
+  # Longer term we can add support of simpleidn and encode unicode domains
+  def self.relaxed_parse(url)
+    url, fragment = url.split("#", 2)
+    uri = URI.parse(url)
+    if uri
+      fragment = URI.escape(fragment) if fragment&.include?('#')
+      uri.fragment = fragment
+      uri
+    end
+  rescue URI::Error
+  end
+
   def self.is_local(url)
     url.present? && (
       Discourse.store.has_been_uploaded?(url) ||