added social media class

Author: akshatjain1004

backend/family_tree/student/models.py

@@ -7,13 +7,15 @@ class Student(models.Model):
     year= models.CharField(max_length=4)
     picture= models.URLField(max_length=200)
     homeTown= models.CharField(max_length=200)
-    extraCurriculars= models.CharField()
-    socialMedia= models.URLField()
+    extraCurriculars= models.CharField(max_length=2000)
+    socialMedia= models.ForeignKey('SocialMedia')
     linkedIn= models.URLField(max_length=200)
     email= models.EmailField(max_length=254)
-    parentId= models.CharField()
-
+    parentId= models.CharField(max_length=9)
 
+class SocialMedia(models.Model):
+		facebook = models.URLField(max_length=255)
+		instagram = models.URLField(max_length=255)