[FIX] packaging: windows: correctly include reportlab font files

Without this patch, the fonts are not included and the barcodes in the
reports were not displayed.

setup.py

@@ -36,9 +36,11 @@ def py2exe_datafiles():
 
     import docutils
     import passlib
+    import reportlab
     import requests
     data_mapping = ((docutils, 'docutils'),
                     (passlib, 'passlib'),
+                    (reportlab, 'reportlab'),
                     (requests, 'requests'))
 
     for mod, datadir in data_mapping: