handle cloned note types in mnemo import
fix i18n issue
run basic integrity check prior to full up
perform basic check prior to syncing
move full sync into preferences, and remove maintenance menu
unify pre-check, sanity-check and upload error messages
catch notes with invalid field count in db check
make desktop folder if missing (#851)
better error with very long fields in import (#852)
export filename check should be on basename
make sure windows that are minimized are restored (#853)
round() doesn't convert to int