Fix import cl_template

calculate/lib/variables/env.py

@@ -20,6 +20,7 @@ from os import path
 from itertools import *
 from calculate.lib.datavars import (TableVariable,Variable,ReadonlyVariable,
                                    VariableError)
+import calculate.lib.cl_template as cl_template
 from calculate.lib.utils.files import listDirectory,process,PIPE
 
 from calculate.lib.cl_lang import setLocalTranslate