fixed country list issues 55 and 58

bt/models.py

@@ -7,6 +7,7 @@ COUNTRIES = (
     ('BE', _('Belgium')),
     ('BG', _('Bulgaria')),
     ('CH', _('Switzerland')),
+    ('CR', _('Croatia')),
     ('CZ', _('Czech Republic')),
     ('DK', _('Denmark')),
     ('DE', _('Germany')),
@@ -16,7 +17,6 @@ COUNTRIES = (
     ('ES', _('Spain')),
     ('FR', _('France')),
     ('IC', _('Iceland')),
-    ('IS', _('Iceland')),
     ('IT', _('Italy')),
     ('CY', _('Cyprus')),
     ('LI', _('Liechtenstein')),