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

frontend/src/lang/en.json

@@ -220,6 +220,11 @@
 		"birthyear.note": "In what year were you born?",
 		"confirmPassword": "Confirm password",
 		"confirmTutor": "Do you confirm selecting “{NAME}” as your guardian?",
+		"availabilities": "Availabilities",
+		"noAvailabilities": "No availabilities provided",
+		"scheduleMeeting": "Schedule Meeting",
+		"linkNotAvailable": "Link Not Available",
+		"noTutorsAvailable": "No tutors are currently available",
 		"consent": {
 			"intro": "You are invited to participate in a scientific study. \nThe objective of this study is to understand how tutors and foreign language learners interact during online tutoring sessions. \nThe data collected will be used to improve online tutoring tools and to better understand cognitive processes on both sides.",
 			"ok": "I agree to participate in the study as described above.",