Fixing error when launching Alex without private configs.

[ticcky]

Adding an empty file that will prevent Alex from failing because of including private files from the main config that do not exist in case somebody is using Alex without the private repository.

[oplatek]

@ticcky what will happen if you want to add the private git repository?
Will it mess the git index with the real secret default.cfg?
If yes, this is easy way how to expose the secret private/default.cfg by accidentally committing it to the public UFAL-DSG/alex repository

[ticcky]

That's right Ondra. Thanks! I think the best thing would be actually to remove the include from the config file altogether, and actually have the include in the secret file but in reverse. What do you think?

[oplatek]

Well, is it really necessary to include one into another or vise versa?
Why not to load the "secret" values explicitly by specifying the "private/default.cfg" in the command line arguments by "-c private/default.cfg"?

[ticcky]

That is even better. I will discuss it with Filip.

[landscape-bot]

Code quality remained the same when pulling ee7dc16 on UFAL-DSG:lz_private_config_fix into 0338af6 on UFAL-DSG:lz_private_config_fix.