Nomad-camels

Fixes:
- finalize steps of instruments are now being called
- fixed issue with handing variables to subprotocol
- fixed update function for Windows, function for Unix/Mac not tested

Added functionalities:
- Added functionality to import protocols

Fixes:
- Fixed error message appearing when closing List-Plot
- Fixed login for central NOMAD
- fixed comment/uncomment of steps being saved correctly

Added functionalities:

Added capabilities to interact with NOMAD (Oasis), uploading files, getting user information and using a NOMAD entry as sample
Functionality to comment / uncomment steps in a protocol for testing / quickly changing a protocol

Fixes:

CAMELS should not crash completely anymore when an instrument cannot be initialised
Variables should mostly be refreshed for step configs without clicking around
add_metadata removed from Custom_Function_Signal
search in channels-tables not case sensitive anymore
fixed that protocol without plots starts QApplication when run outside CAMELS

Fixed the 'Update CAMELS' tool.\
Renamed input and output to read and set in the 'Update CAMELS' tool.\
Small fix to the VISA device builder.

Added a timeout setting to all VISA instruments. Setting the timeout determines how long the instrument waits after sending a command before raising a timeout exception

First stable and working release