Add "sets.rememberScrollPosition" preference
Cleanup saved data, if "sets.rememberScrollPosition" is set to false
Add UI for "sets.rememberScrollPosition" preference
Update changelog: "sets.rememberScrollPosition" preference
Don't save empty string, if "sets.rememberSearchQuery" == false
+ correctly delete obsolete "sets.lastSearchQuery" preference with empty string
Refactor functions around import menu
Clear "restore from backup" popup just before updating:
file I/O is slow, so it's better to reduce flickers
Improve performance of Import menu:
add small delay before slow operations
Update changelog: improved performance of Import menu