feat: Include __future__ imports for 2.7 backwards compt

- If the file is run in py2, it should still function if using certain
py3 functionality (unicode, division, imports, etc)
Signed-off-by: David Haynes <dhaynes3@gmu.edu>

whats_open/website/admin.py

+# Future Imports
+from __future__ import (absolute_import, division, print_function,
+                        unicode_literals)
+
+# Django Imports
 from django.contrib import admin
+
+# App Imports
 from .models import Facility, Schedule, OpenTime, Category
 
 class OpenTimeInline(admin.TabularInline):

whats_open/website/api.py

-from models import Facility
+# Future Imports
+from __future__ import (absolute_import, division, print_function,
+                        unicode_literals)
+
+# Python stdlib Imports
 import re
 
+# App Imports
+from .models import Facility
+
 def export_data():
     facilities = list()
     

whats_open/website/models.py

+# Future Imports
+from __future__ import (absolute_import, division, print_function,
+                        unicode_literals)
+
+# Python stdlib Imports
+import datetime
+
+# Django Imports
 from django.db import models
 from django.contrib.auth.models import User
 from model_utils.models import TimeStampedModel
 from autoslug import AutoSlugField
-import datetime
 
 class Category(TimeStampedModel):
     name = models.CharField(max_length=100)

whats_open/website/serializers.py

+# Future Imports
+from __future__ import (absolute_import, division, print_function,
+                        unicode_literals)
+
+# App Imports
+from .models import Category, Facility, Schedule, OpenTime
+
+# Other Imports
 from rest_framework import serializers
-from website.models import Category, Facility, Schedule, OpenTime
 
 class CategorySerializer(serializers.ModelSerializer):
     class Meta:

whats_open/website/urls.py

+# Future Imports
+from __future__ import (absolute_import, division, print_function,
+                        unicode_literals)
+
 # Django Imports
 from django.conf.urls import include, url
 

whats_open/website/views.py

+# Future Imports
+from __future__ import (absolute_import, division, print_function,
+                        unicode_literals)
+
+# Python stdlib Imports
+import hashlib
+import json
+
+# Django Imports
 from django.template import RequestContext
-from website.models import Facility, OpenTime
-from website.api import export_data
 from django.shortcuts import render_to_response
 from django.http import HttpResponse
 from django.views.decorators.http import condition
 from django.views.generic import ListView, DetailView
 from model_utils.models import TimeStampedModel
 
-from website.models import Facility, OpenTime, Category, Schedule
-from website.api import export_data
-from website.serializers import  CategorySerializer, FacilitySerializer, ScheduleSerializer, OpenTimeSerializer
+# App Imports
+from .models import Facility, OpenTime, Category, Schedule
+from .api import export_data
+from .serializers import  CategorySerializer, FacilitySerializer, ScheduleSerializer, OpenTimeSerializer
 
+# Other Imports
 from rest_framework import viewsets, status
 from rest_framework.response import Response
 from rest_framework.decorators import api_view
 
-import hashlib
-import json
-
 # Rest Framework Class Views
 class CategoryViewSet(viewsets.ReadOnlyModelViewSet):
     queryset = Category.objects.all()