Swapped Code from ScanMi-method to another function, removed dupl...

...icate code and made ScanMi  easier to read
- Removed MEDIAINFO-RAR handling in Ember since for ISO files scanning tools like tools like DAIMON Tools or VirtualCloneDrive are superior
- Fix: If VIDEO_TS scan fails because the biggest scanned IFO file didn't contain any video information than try with 2nd largest instead