wxGUI: Console: Export history of executed commands

[lindakarlovska]

This PR changes the way how the Log file button works. In this PR it is renamed to Export history because it better reflects what it newly does.

Original behavior (the button Log file is togglable):

1. Press the button Log file in the Console
2. Choose where you want to store executed commands
3. Starting this moment, all executed commands are stored to this file
4. Press the button Log file again and stop storing executed commands to the defined file

New behavior (the button Export History is not togglable):

1. Press the button Export History in the Console
2. Choose where you want to store executed commands
3. Store the whole history of executed commands (content of .wxgui_history file which is a part of a mapset)

All executed command history related to particular mapset environment can be automatically saved by clicking on the Export history button:

[petrasovaa]

I would move the exception handling in the CopyHistory. Check if the error type is appropriate, it seems OSError should be used instead.

[lindakarlovska]

Good, I moved it to the CopyHistory. I think that the error type is okay according to https://docs.python.org/3/library/shutil.html : Changed in version 3.3: IOError used to be raised instead of OSError. Added follow_symlinks argument. Now returns dst.
But when I looked at the examples of how to use shutil.copyfile I found out that they use handling of different error types: https://www.geeksforgeeks.org/python-shutil-copyfile-method/
So difficult to decide... I would probably keep the IOError or just put the general except Exception as e: . What do you think?

[nilason]

Suggested change

	except IOError as e:
	except (IOError, OSError) as e:

Maybe?

[lindakarlovska]

Maybe. A good compromise.