Restructuring

This MR restructures all scan configuration files as well as the handling of masks, tackling #85 (closed) and finally solving #64 (closed). Configuration of DACs is now handled in a configuration file per chip and scan parameters are defined in a local_configuration dictionary directly in the scan script.

Disable and TDAC mask are now stored to and loaded from the same file. Automatic handling of this maskfile in a characterization workflow is supported.