Registration flow

Now, the tutor can set a general "Bio' during the registration process (/tutor/register/). The 'Bio' component is located in step 3 (Informations) of the registration flow.

Update (22/02):

• Successfully merged registration flows for learners and tutors into a single flow

backend/app/models.py

@@ -50,7 +50,7 @@ class User(Base):
     calcom_link = Column(String, default="")
     study_id = Column(Integer, ForeignKey("studies.id"), default=None)
     last_survey = Column(DateTime, default=None)
-    availabilities = Column(JSON, default=[])  
+    availabilities = Column(JSON, default=[])
 
     sessions = relationship(
         "Session", secondary="user_sessions", back_populates="users"