Changed the error report so it brings the user to Github directly

Making error reporting too easy results in too much context-less
tracebacks which demand attention and, in the end, aren't of much use.

Requiring the user to report errors on Github will reduce the number of
reports, but hopefully make these reports have better context.

qt/run_template.py

@@ -38,7 +38,7 @@ def main():
     from qt.{edition}.app import DupeGuru
     app.setWindowIcon(QIcon(QPixmap(":/{0}".format(DupeGuru.LOGO_NAME))))
     dgapp = DupeGuru()
-    install_excepthook()
+    install_excepthook('https://github.com/hsoft/dupeguru/issues')
     return app.exec()
 
 if __name__ == "__main__":