Migration to bcrypt

Context

• This is part of release-1.5 #148
• MEDIUM priority task

Tasks

• Remove dependency bcrypt-nodejs in package.json
• Add dependency bcrypt in package.json
• Migrate file app/data/user-dao.js to bcrypt
• Validate the instalation with the local test
• Add and submit the changes in package-lock.json
• Add the primary dependency list to the readme.md
• Check that the npm tasks are working as expected
• Update the readme.md with the extra relevant info (if needed)

Assignation

• This tasks is open for assignation, just claim it (as reply to this) and submit your PR ;-)

Important

• Check the current roadmap #148
• Don't forget to check the Contributing Guidelines and follow the Code of Conduct