Release 1.1.3

# 1.1.3 (18 July 2014)
## Bug fix
 - Prefix not passed in get_object_list #106 (untergeek)
 - Use os.devnull instead of /dev/null for Windows #102 (untergeek)
 - The http auth feature was erroneously omitted #100 (bbuchacher)

Fixes already in master pushed into es_repo_mgr.py and tested.