merging feat32-groupContent into master

added functionality for group content in both backend and frontend

backend/secfit/content/models.py

@@ -12,4 +12,4 @@ class Content(models.Model):
     )
     title = models.TextField(max_length=100)
     description = models.TextField()
-    image = models.ImageField(upload_to='images', blank=True)
\ No newline at end of file
+    image = models.ImageField(upload_to='media', blank=True)
\ No newline at end of file