Add 'force-push' slider for tags
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In the settings->repository screen, we have a slider to 'allow force push', which allows us to turn it off, and on again. This slider is missing for tags. Surely an oversight, but leads to inconsistency in the ~UX and makes it for those rare cases where you have to overwrite a tag, you have to delete the rule, push the tag, re-create the rule, which is quite cumbersome. But again, having a consistent ~UX is also desirable.
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