Change model force hierarchy, Option label updates
Created by: sonninnos
Currently filename tags are having the last word when the model is chosen, and that conflicts with the core option somewhat.
For example when trying to force a CDTV game to CD32 mode via core options if the file is in a directory that matches the tag "CDTV", it can't be done because the filename matching actually searches the whole path.
This PR changes the pecking order to model core option having the final say, so that game-based overrides can be used whatever the case may be. Filename tags are searched only with the "Automatic" model, like Guru intended.
Any possible blindspots? Seems to working fine. Relates to #272 (closed) but does not close.
Also some minimal bonus rewordings and rephrasings to Readme, verbose log and option labels.