When selecting multiple plugins and performing deactivate, keep selected for next bulk action (if any)

[aubreypwd]

When bulk-deactivating multiple plugins I am usually aiming to delete them as well. In a long list it's a pain to re-select them over again to delete them.

[ashfame]

First pass

[SergeyBiryukov]

first_pass.30976.diff​ seems good, but we have to be careful to avoid creating too long URIs, like in #10762 or #29049.

[swissspidy]

30976.diff​ is an updated patch against trunk that makes the current code more readable using functions like sprintf() and checked(). Just like the initial patch, the checkboxes are still checked after plugin activation and deactivation.

Still need to get used to that functionality. Perhaps it's not needed on plugin activation.

[karmatosed]

This feels like a really nice predictive enhancement. From a UX perspective it's a fair assumption to make.