Removed import in __init__

This import gets called when Django starts. The imported module further imports Django REST Framework code that attempts to call the translation infrastructure before the apps registry is ready. This prevents Django from properly starting and users from upgrading Django REST Framework.

edx_sga/__init__.py

@@ -1,5 +1,3 @@
 """
 Module for StaffGradedAssignmentXBlock.
 """
-
-from .sga import StaffGradedAssignmentXBlock

setup.py

@@ -16,7 +16,7 @@ def package_data(pkg, root_list):
 
 setup(
     name='edx-sga',
-    version='0.5.0',
+    version='0.5.1',
     description='edx-sga Staff Graded Assignment XBlock',
     license='Affero GNU General Public License v3 (GPLv3)',
     url="https://github.com/mitodl/edx-sga",
@@ -29,7 +29,7 @@ def package_data(pkg, root_list):
     ],
     entry_points={
         'xblock.v1': [
-            'edx_sga = edx_sga:StaffGradedAssignmentXBlock',
+            'edx_sga = edx_sga.sga:StaffGradedAssignmentXBlock',
         ]
     },
     package_data=package_data("edx_sga", ["static", "templates"]),