[Neat URL] Probable bugs when urlDecode whole URL

[gwarser]

Please stop urlDecoding URL at a whole on the beginning of cleaning. This looses information! L460

For example:

• create rule foo@example.com
• go to example.com?foo%3Dbar=baz
• browser should send: foo=bar == baz
• extension sees example.com?foo=bar=baz
• extension removes foo == bar=baz

Another:

• go to example.com?foo=bar&ab%3Dcd=ef
• after cleaning, browser should send ab=cd == ef
• actually ab == cd=ef is sent

Related #73

If this is really needed, do this after splitting by ?, & and =.
If you want to support url's like this: example.com?url=example2.com%3Futm%3Dsomething you should probably use recursion ;) URLs like this will be cleaned after redirection to example2.com.