Persist folder location to save/restore batch processing config file

[qgib]

Author Name: Spencer Gardner (@spencerrecneps)
Original Redmine Issue: 16310

Redmine category:processing/core
Assignee: Victor Olaya

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When I load a saved batch processing configuration file the Open File dialog always starts in my home directory, even if I've selected a file from a different directory previously during the same session. It would be nice for Processing to remember the folder location that I accessed last within the same session and start the dialog at that location so I don't have to navigate the directory structure to open a batch config file.

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• easy_fix was configured as 0

[qgib]

Author Name: Nyall Dawson (@nyalldawson)

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Applied in changeset 8526a2d.

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• done_ratio was changed from 0 to 100
• status_id was changed from Open to Closed