[1.8.x] Fixed Persian locale FIRST_DAY_OF_WEEK & DECIMAL/THOUSAND_SEPARATORs.

Reference: http://lh.2xlibre.net/locale/fa_IR/

Backport of f1ff9407c9 from master

django/conf/locale/fa/formats.py

@@ -12,13 +12,13 @@ YEAR_MONTH_FORMAT = 'F Y'
 MONTH_DAY_FORMAT = 'j F'
 SHORT_DATE_FORMAT = 'Y/n/j'
 SHORT_DATETIME_FORMAT = 'Y/n/j،‏ G:i'
-# FIRST_DAY_OF_WEEK =
+FIRST_DAY_OF_WEEK = 6
 
 # The *_INPUT_FORMATS strings use the Python strftime format syntax,
 # see http://docs.python.org/library/datetime.html#strftime-strptime-behavior
 # DATE_INPUT_FORMATS =
 # TIME_INPUT_FORMATS =
 # DATETIME_INPUT_FORMATS =
-DECIMAL_SEPARATOR = ','
-THOUSAND_SEPARATOR = '.'
+DECIMAL_SEPARATOR = '.'
+THOUSAND_SEPARATOR = ','
 # NUMBER_GROUPING =