Remove tooltypes in favour of configuration file

[walkero-gr]

For a long time now iGame has a settings window and a config text file. I believe that the tooltypes are somehow obsolete and add some confusion on the app, because someone that has already created a config file, if he tries to change a tooltype, the change is not applied.

In my opinion we should remove the tooltypes and simplify the code to not use them.

Also, we should decide the default configuration values. For example, if iGame's target is low end Amiga's maybe by default should not show the screenshot, unless the user enables it through settings. Those default values will be applied if the config file is not available.

What is your opinion?