Created Methods For Company Service:
     UpdateCompany
     LoginCompany
     AddCompany
Merge branch 'master' of https://github.com/Cyclomatic-Dynamics/IT-Recrutement-Link.git
Modified Service Project
Modified Login services:
    Find Calls for email are made by lambdas
Modified Data constraints From Fluent API to Data Annotations.
Merge branch 'master' of https://github.com/Cyclomatic-Dynamics/IT-Recrutement-Link.git