Ensure that linux bundle does not use user config path.

I think this is simple enough now, since the bitmask-core main object is the one that centralizes that config-data path. I also have my doubts about we putting data on .config/leap, I think we should use .cache/bitmask for the data or something like that.

Note also that Pixelated is using its own path.

I think we could use a documentation page for centralizing the several paths we use in diferent platforms.