Improve bank list generator

This MR :

• ignores deprecated modules before trying to load the module to avoid pointless error logs. (eg wellsfargo is deprecated, but cannot by loaded because it is not compatible with python3, as one of its deps has changed). This is the 1st commit.
• removes request_information field of N26 as it is not used (this field is not used in the code). This is the second commit.
• gets the config of the parent module if the child module does not have any config. (eg: afer has no config of its own, it direclty uses the config of its parent module. Without this change, æfer is ignored by the script.). This is the last commit.