Added document printing support

apps/common/utils.py

@@ -302,3 +302,12 @@ def return_type(value):
         return ','.join(list(value))
     else:
         return value
+        
+
+# http://stackoverflow.com/questions/4248399/page-range-for-printing-algorithm
+def parse_range(astr):
+    result=set()
+    for part in astr.split(u','):
+        x=part.split(u'-')
+        result.update(range(int(x[0]),int(x[-1])+1))
+    return sorted(result)