Information model change: renaming main entities

[cesaraugustogarcia]

Purpose 💪

After some research, we can conclude that this project, at least today, is targeting the "On Demand Economy". Therefore, here we are renaming main entities in our information model to adapt to the terminology used nowadays.
Main change consists of renaming:
mentor -> supplier
mentee -> consumer
relantionship -> connection

Changes required (Database, config, etc)

Please recreate DB. Suggested steps:
First, in MYSQL CLI:

DROP DATABASE socialapp;
CREATE DATABSE socialapp;

Then on the project

python manage.py migrate