[bugfix] Fix upload.py breaking with url and description containing ":"
[bugfix] Fix upload.py breaking with url and description containing ":"

Change-Id: I68ea492f02ba510b3b8d27d5962e3a98a741b41b

wikimedia/pywikibot-core,wikimedia/pywikibot-core,PersianWikipedia/pywikibot-core