Description of problem:
Locales do not work
The po files installation is useless.

Version-Release number of selected component (if applicable):
0.57.1-5 and backwards

How reproducible:
Run with non-US settings or with changed LANG=.

Actual results:
Always in C (default en) because locales were not found.

Expected results:
It should run in many locales.

Additional info:
From values.py:
SYSTEMLOCALEDIR = "LOCALEDIR"
LOCALEDIR = "locale"
From i18n.py:
localedir=os.environ.get(values.SYSTEMLOCALEDIR, values.LOCALEDIR)
gettext.install("gdeskcal", localedir, unicode = 1)

The environment variale LOCALEDIR does not exist on most systems, therefore the
"locale" directory path is always returned.

Solution:
Replace os.environ.get() function or remove it and provide direct path in:
gettext.install("gdeskcal", "/usr/share/locale", unicode = 1). Or test the
presence of the local "locale" directory, otherwise use system default.