Application :: readOptionsFile - Read options from configuration file

The function reads the options from the application configuration file (initializeOptions()). The function may be called in order to get access to options that have been changed in the ini- or configuration file.

Option values currently set are not updated automatically, except, the option value is empty. Empty option values are searched in the ini-file. In order to refresh an option that is currently set, one may remove the option (Option::erase())or set the option to an empty string.