Saifur Rahman Mohsin f6c789f716 Added getConfig helper method to get config values (#4653)
Credit to @SaifurRahmanMohsin 

Added getConfig to make it easier for developers to fetch the config data from a list column while overriding the list items through extension. This also makes the class more compatible with [FormField](https://github.com/octobercms/october/blob/master/modules/backend/classes/FormField.php) which already has the same helper function.
2019-10-02 16:33:14 -06:00
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