Major changes in 45.rc
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* Avoid slowness when many files are selected (Corey Berla, António Fernandes)
* Make tooltip and menu for Preferences back button not empty (Domenico Iezzi)
* Revert patch which could cause loss of data (Corey Berla, Ondrej Holy)
* Fix sizing and styling of Visible Columns (António Fernandes)
* Change sidebar title (António Fernandes)
* Translation updates (GNOME Translation Project contributors)