Due to vfs deprecation there is need to remove all vfs calls from code. This PR covers module gui. There are some modifications in other modules included which are necessary because of build system issues.
Change filename of internationalization files from i18 to i18n.
I18n should stand for internationalization, not i18. That's why I changed in 'module-utils' name of the folder 'i18' and both .cpp and .hpp files to 'i18n'.
[EGD-3681] review issues solved: new settings window contains link to the old one, _old files removed, issues regarding lambda params, removed translations for de, fr, sp;removed section file/author from the header/body, removed destructor - default one exists in the base class, not used parameter with maybe_unused param, reoved dead code; DeinitHandler removed (was empty) - currently base class calls onClose on all its windows; reinterpret_cast removed