Extract hashes in TrackThing#params to methods
Extract hashes in TrackThing#params to methods

Use private methods to make TrackThing#params easier to read and ready
for dynamic method calling based on the track_type

andreicristianpetcu/alaveteli,petterreinholdtsen/alaveteli,codeforcroatia/alaveteli,andreicristianpetcu/alaveteli,Br3nda/alaveteli,andreicristianpetcu/alaveteli_old,petterreinholdtsen/alaveteli,Br3nda/alaveteli,TEDICpy/QueremoSaber,TEDICpy/QueremoSaber,andreicristianpetcu/alaveteli,petterreinholdtsen/alaveteli,TEDICpy/QueremoSaber,4bic/alaveteli,codeforcroatia/alaveteli,datauy/alaveteli,4bic/alaveteli,andreicristianpetcu/alaveteli_old,Br3nda/alaveteli,petterreinholdtsen/alaveteli,nzherald/alaveteli,andreicristianpetcu/alaveteli_old,Br3nda/alaveteli,datauy/alaveteli,nzherald/alaveteli,petterreinholdtsen/alaveteli,datauy/alaveteli,Br3nda/alaveteli,4bic/alaveteli,andreicristianpetcu/alaveteli_old,nzherald/alaveteli,4bic/alaveteli,TEDICpy/QueremoSaber,4bic/alaveteli,codeforcroatia/alaveteli,andreicristianpetcu/alaveteli,andreicristianpetcu/alaveteli,andreicristianpetcu/alaveteli_old,codeforcroatia/alaveteli,nzherald/alaveteli,TEDICpy/QueremoSaber,nzherald/alaveteli