Crash on moving columns when in French

[hsoft]

@@@
Application Identifier: com.hardcoded_software.moneyguru
Application Version: 2.3.3

Traceback (most recent call last):
File "/Applications/moneyGuru.app/Contents/Resources/mg_cocoa.plugin/Contents/Resources/mg_cocoa.py", line 300, in moveColumn_toIndex_
File "core/gui/column.pyc", line 59, in move_column
ValueError: list.remove(x): x not in list
@@@

Strangely, this only happens when I run moneyGuru in French. Interesting...

[hsoft]

(from [357b45d441da]) [#211 state:fixed] When a bug causes MGColumns' tableView to be nil, don't connect to notifications, or else we bug things up even more.
http://bitbucket.org/hsoft/moneyguru/changeset/357b45d441da/

[hsoft]

This bug has its root cause in #210, but it's still a bug in itself because it doesn't handle the unexpected situation caused by such bugs very well.