mnemosyne.script: crash on finalise

[Julian Mehne]

The following code throws an error (on your pbienst branch, as well as the mnemosyne-proj branch (which requires the fix from 2087 from your pbienst branch)):

from mnemosyne.script import Mnemosyne
m = Mnemosyne(None)
m.finalise()

An unexpected error has occurred.
Please forward the following info to the developers:

Traceback (innermost last):
  File "./test.py", line 12, in <module>
    m.finalise()
  File "/home/kelvin/tmp/mnemosyne-pbienst/mnemosyne/mnemosyne/libmnemosyne/__init__.py", line 398, in finalise
    self.component_manager.deactivate_all()
  File "/home/kelvin/tmp/mnemosyne-pbienst/mnemosyne/mnemosyne/libmnemosyne/component_manager.py", line 131, in deactivate_all
    component.deactivate()
  File "/home/kelvin/tmp/mnemosyne-pbienst/mnemosyne/mnemosyne/libmnemosyne/component.py", line 80, in deactivate
    for component in self.instantiated_gui_components:
 AttributeError: 'ScriptMainWidget' object has no attribute 'instantiated_gui_components'

The reason seems to be that `instantiated_gui_components` is set in `Component.__init__`, but `ScriptMainWidget` defines its own `__init__` that does not call the parent's `__init__`.

This prevents it from crashing, but I'm not sure if it's the right fix:

=== modified file 'mnemosyne/mnemosyne/script/__init__.py'
--- mnemosyne/mnemosyne/script/__init__.py 2017-10-09 11:42:41 +0000
+++ mnemosyne/mnemosyne/script/__init__.py 2017-10-14 21:42:08 +0000
@@ -16,6 +16,7 @@
 class ScriptMainWidget(MainWidget):

     def __init__(self, component_manager):
+ super().__init__(component_manager)
         self.q_and_a = None

[Peter Bienstman (peter-bienstman)]

committed in pbienst, thanks!