daq_targets, daq_configs in run_scripting

[guiguem]

There is a naming scheme problem in the run_scripting:

• when using single run, the user should define a list:

daq_configs:
     - daq_1
     - daq_2

• when using a multirun, the user can define a list:

daq_targets:
     - daq_1
     - daq_2

or a dictionary

daq_configs:
     - daq_target: daq_1
        run_duration: 1000
     - daq_target: daq_2
        run_duration: 100

See the problem?
It's a complete mess!
We need to clean this and make it consistent...