MT#5879 It was rather stupid to make unique index on is_active field: there could be a lot of inactive templates.

db_scripts/diff/15043.down

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+USE billing;
+
+ALTER TABLE `invoice_template`
+  ADD UNIQUE INDEX `invoice_template_reseller_active_UNIQUE` (`reseller_id`,`is_active`);

db_scripts/diff/15043.up

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+USE billing;
+
+
+ALTER TABLE `invoice_template` DROP INDEX `invoice_template_reseller_active_UNIQUE`;