Fix all security issues automatically generated by the bot by fixing npm dependencies.
Current open issues to solve:

• CVE-2018-3721 Medium Severity Vulnerability detected by WhiteSource #17
• Medialab Prado Scraping #24
• WS-2019-0017 Medium Severity Vulnerability detected by WhiteSource #28
• CVE-2018-16487 High Severity Vulnerability detected by WhiteSource #29
• CVE-2019-12387 (Medium) detected in Twisted-19.2.0.tar.bz2 #37
• CVE-2019-12855 (High) detected in Twisted-19.2.0.tar.bz2, Twisted-19.2.1.tar.bz2 #38
• WS-2017-3737 (Medium) detected in shelljs-0.3.0.tgz #39