Jiotty Photos Uploader 1.4.1

In this release:

1. Show an error dialog if an older version is started after a newer one has already upgraded data structures (instead of crashing) (#65).
2. Various improvements to progress bars: display percentage of files uploaded, better phrasing etc (#66).
3. Finished all Chinese translations (thanks @axylee).
4. Fixed a crash when About dialog is shown.
5. Windows 10 package is back!