Add more on-vehicle SSIDs to the block list

Hello,
I added SSIDs to the block list for:
* Barcelonabusturistic.cat touristic buses
* Flygbussarna.se buses
* National Express coaches
* NSB.no Norwegian state railways
* Oxfordtube.com buses
* SJ.se Swedish state railways

Right now there is only code in place for doing prefix and suffix matching. Given for example the very short length of the Swedish State Railways' on-train SSID "SJ" one can consider a more flexible matching. I know, there will always be some false-negatives, but if others agree, I can add more flexible matching.