Remove url-encoded surrounding quotes to URL parameters

[ppom0]

Fix #879

Not quite sure of what I'm doing, as I'm discovering the codebase

[lovasoa]

I think the source of the bug is actually here: https://github.com/sqlpage/SQLPage/blob/main/src%2Fwebserver%2Fdatabase%2Fsqlpage_functions%2Furl_parameter_deserializer.rs#L62

[lovasoa]

val.to_string() encodes the value as json, so if it's a string, it ends up encoded surrounded with "

[lovasoa]

sorry for the long delay, and thank you ! the fix will be in 0.35 !

[ppom0]

Thanks for actually doing the fix!
I had to dig more to be able to do it and didn't find the time.
Thanks :D