Better Error handling in cases of invalid widget specification

[miranov25]

The code below with an invalid widget type (spinnerrange instead of spinnerrange) is not caught. The code is only failing with stack trace which is non meaningful.

widgetParams+=[
    ["multiSelect", ["run"],{"name":"run"}],
    ["spinnerrange", ["dTime"],{"name":"dTime"}],
    ["spinnerRange", ["qPt"],{"name":"qPt"}],
    ["spinnerRange", ["tgl"],{"name":"tgl"}],
    ["spinnerRange", ["dcasR"],{"name":"dcasR"}],
    ["spinnerRange", ["dcasZ"],{"name":"dcasZ"}],
]

TODO:

• raise an exception in case of invalid widget type resp. in case of invalid initialization

Current stack trace in case of syntax error above

> /u/miranov/github/RootInteractive/RootInteractive/InteractiveDrawing/bokeh/bokehTools.py(803)bokehDrawArray()
    801         for axis_index, axis_name  in enumerate(BOKEH_DRAW_ARRAY_VAR_NAMES):
    802             if axis_index < nvars:
--> 803                 variablesLocal[axis_index] = variables[axis_index].copy()
    804             elif axis_name in optionLocal:
    805                 variablesLocal[axis_index] = optionLocal[axis_name]

ipdb> print(variablesLocal)
[None, None, None, None, None, None, None, None]
ipdb> print(variables)
['spinnerrange', ['dTime'], {'name': 'dTime'}]