Fix silly import causing test failure

Author: mgersh

esp/esp/program/modules/handlers/classchangerequestmodule.py

@@ -41,7 +41,7 @@
 from esp.program.modules.base import ProgramModuleObj
 from esp.program.modules.base import main_call, aux_call, needs_admin, needs_student, meets_grade
 from esp.web.util import render_to_response
-from esp.users.models.__init__ import ESPUser
+from esp.users.models import ESPUser
 from esp.utils.query_utils import nest_Q
 
 from django import forms