Improve layer name rendering for MySQL connections

[qgib]

Author Name: Admire Nyakudya (@NyakudyaA)
Original Redmine Issue: 20579

Redmine category:data_provider
Assignee: Alessandro Pasotti

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I have added a new MySQL layer in QGIS and notice that in the layer list they are listed with the connection parameter. It would be nice to only show
the friendly layer name for each of the layers.

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• mysql.png (Admire Nyakudya)

[qgib]

Author Name: Alessandro Pasotti (@elpaso)

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• assigned_to_id was configured as Alessandro Pasotti

[qgib]

Author Name: Alessandro Pasotti (@elpaso)

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PR #8526

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• status_id was changed from Open to In Progress

[qgib]

Author Name: Anónimo (Anónimo)

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Applied in changeset 84eed01.

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• done_ratio was changed from 0 to 100
• status_id was changed from In Progress to Closed