add a comment to explain why the code of the script is so ugly

SVN: 21825

openbis_all/source/bash/upload-sprint-to-confluence.py

 #!/usr/bin/python
 #
+# Kaloyan: this script was created under time pressure, so its implementation is not optimal.
+# Feel free to improve it.
 #
 # @author:  Kaloyan Enimanev
 #