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
allow canceling of note type selection (#849)
fix duplicate search in browser (#855)
fix crash on linux when pasting invalid url (#858)
fix drag&drop of images with # char (#867)
fix main window coming to top after paste on win (#456)
allow a few more audio formats in paste
fix rescheduling of relearn cards (#874)

- need to reset 'odue'
- also need to reset 'due' so the new cards don't take on - timestamp
  positions
correctly decode %-escaped utf8 when pasting (#865)