Allow to register contacts

[LucileDT]

Context

Non profits often are in contact with people and organizations. We need to save them to easily access their information when needed.

Todo

• save "contacts" information
  • fields:
    • abstract getName()
    • address
    • phoneNumber
    • email address
  • save natural persons information
    • firstname
    • lastname
    • mobilePhoneNumber
  • save companies information
    • name
    • siret
  • save non profits information
    • name
    • website
• have a list of "contacts"