App renamed from rex to backend to be clearer

rex/models/module/basicModule.py → backend/models/module/basicModule.py

 from django.db import models
-from rex.models.tools import UsefullLinksField
-from rex.models.module import VersionnedModule, VersionnedModuleSerializer
+from backend.models.tools import UsefullLinksField
+from backend.models.module import VersionnedModule, VersionnedModuleSerializer
 
 
 class BasicModule(VersionnedModule):

rex/models/module/driRestrictedModule.py → backend/models/module/driRestrictedModule.py

-from rex.models.module import BasicModule, BasicModuleSerializer
+from backend.models.module import BasicModule, BasicModuleSerializer
 
 
 class DriRestrictedModule(BasicModule):

rex/models/module/photo.py → backend/models/module/photo.py

 from django.db import models
-from rex.models.module import VersionnedModule
-from rex.utils.friendly_path import friendly_path
+from backend.models.module import VersionnedModule
+from backend.utils.friendly_path import friendly_path
 
 path_and_rename = friendly_path("uploads/universities/photos/", 'title')
 

rex/models/module/scholarship.py → backend/models/module/scholarship.py

 from django.db import models
-from rex.models.module import BasicModule
+from backend.models.module import BasicModule
 from .currency import Currency
 from rest_framework import serializers
 from django.core.validators import MinValueValidator

rex/models/otherCore/offer.py → backend/models/otherCore/offer.py

 from django.db import models
 from rest_framework import serializers, viewsets, permissions
-from rex.models.university import University
-from rex.models.otherCore import Semester, Specialty
+from backend.models.university import University
+from backend.models.otherCore import Semester, Specialty
 
 
 class Offer(models.Model):

rex/models/otherCore/specialty.py → backend/models/otherCore/specialty.py

 from django.db import models
 from rest_framework import serializers, viewsets, permissions
-from rex.models.otherCore import Department
+from backend.models.otherCore import Department
 
 
 class Specialty(models.Model):

rex/models/tools/usefullLinksField.py → backend/models/tools/usefullLinksField.py

 from django.contrib.postgres.fields import JSONField
 from rest_framework import serializers
-from rex.models.tools.validateWithRestFramework import validate_with_rest_framework
+from backend.models.tools.validateWithRestFramework import validate_with_rest_framework
 
 
 class UrlAndDescriptionSerializer(serializers.Serializer):

rex/models/university/campus.py → backend/models/university/campus.py

 from django.db import models
-from rex.models.module import BasicModule, BasicModuleSerializer
-from rex.models.location import City
-from rex.models.university import University
+from backend.models.module import BasicModule, BasicModuleSerializer
+from backend.models.location import City
+from backend.models.university import University
 from django.core.validators import MinValueValidator, MaxValueValidator
 from rest_framework import viewsets, permissions
 

rex/models/university/campusBasicModules.py → backend/models/university/campusBasicModules.py

 from django.db import models
-from rex.models.module import BasicModule
-from rex.models.university import Campus
+from backend.models.module import BasicModule
+from backend.models.university import Campus
 from rest_framework import viewsets, permissions
-from rex.models.module import BasicModuleSerializer
+from backend.models.module import BasicModuleSerializer
 
 ####################
 # CultureAndStudentLife

rex/models/university/university.py → backend/models/university/university.py

 from django.db import models
-from rex.models.module import VersionnedModule
-from rex.utils.friendly_path import friendly_path
+from backend.models.module import VersionnedModule
+from backend.utils.friendly_path import friendly_path
 
 path_and_rename = friendly_path("uploads/universities/logos/", 'name')
 

rex/models/university/universityAPI.py → backend/models/university/universityAPI.py

-from rex.models.university import University
+from backend.models.university import University
 from rest_framework import serializers, viewsets, permissions
-from rex.models.university.campus import CampusSerializer
+from backend.models.university.campus import CampusSerializer
 
 
 class UniversitySerializer(serializers.ModelSerializer):