multiple fixes

- Solves this issue : https://github.com/lukapusic/soundcloud-dl/commit/1ad95efb0cfd31ddd6bc7f136bcd72de0cf0b3a5#commitcomment-7953776
- Fixes songpermalink for some cases : https://github.com/lukapusic/soundcloud-dl/commit/30eb5797e6e8a496fab1761460046a81398f9e30