Rule based renderer gui enhancements: copy/paste; refine>use expression

[qgib]

Author Name: Alister Hood (@AlisterH)
Original Redmine Issue: 6713

Redmine category:gui

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It would be nice if it was possible to:
(1) duplicate an existing rule (maybe it would be best to implement copy and paste of rules, to also allow duplicating it to another layer or project).
(2) create a sub-rule in one step. Currently "refine current rules" only has options for adding scales, categories or ranges. If you want to create a sub-rule manually you need to know that you can use the "add" button and then drag-and-drop to make it a sub rule. It would be nice to have an option called something like "refine current rules>use expression"

[qgib]

Author Name: Médéric RIBREUX (Médéric RIBREUX)

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Hello, bug triage...

you can copy/paste rule(s) on the same layer and on other layers. Your first point is fully implemented.
For the second point, a workaround could also be to add a sub-rule whenever you click on the + button when a rule is selected.

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• done_ratio was changed from 0 to 50

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• easy_fix was configured as 0