1. Fix possibility to write illogical operations.
2. Fix possibility to write multiple '0' when it is not needed.
3. Add scientific notation when result do not fit on screen.
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'.
Crush was caused when using std::to_string() on rt1051 to convert double (result from equation) to string.
Other methods f.e. using std::stringstream, sprintf also do not work.
Add own floating point converter to string.
