Improve Cypress script

Context

• This is part of release-1.5 #148
• Critical task

Tasks

• Improve the speed of the e2e tests (almost 8 minutes now). Maybe videos are generated (ci/local envs)
• Add test that are missing (fast check)
• Remove unnecessary/repetitive tests
• Improve the command dbReset. Missing validation due Travis conflicts
• 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