Updated Cypress quickstarter dependencies

[herrkoch]

(including major version update to Cypress 5)

Fixes #441

Tasks:

• Updated documentation in docs/modules/... directory
• Adjusted and verified tests in tests/... directory -> Tests ran fine in Jenkins of my OpenShift playground project

[herrkoch]

I just saw that there are a couple of warnings in the Jenkins build that I did not see locally (even though I removed node_modules completely). I'll try to reproduce and fix the warnings.

[herrkoch]

Ok one of the warnings about tslint-language-service you also mentioned in #440 @michaelsauter . It seems the plugin is deprecated in favor of https://github.com/microsoft/typescript-tslint-plugin . I'll try to replace it.

[herrkoch]

The other warning is about rxjs-tslint, which seems to provide obsolete tslint rules after the update to RxJS v6, so I am going to remove it.

[herrkoch]

The third and last deprecation warning is about har-validator which is a transitive dependency of Cypress, so unfortunately I can't do anything about it right now and hope the Cypress devs replace it soon. The PR is now ready for review.

[herrkoch]

One last remark to this warning: tput: No value for $TERM and no -T specified-> That seems to come from the terminal configuration Jenkins uses, so not related to the Cypress quickstarter. I can't observe this locally.

[michaelsauter]

@herrkoch Awesome, looks good to me 👍

Maybe @cschweikert or someone else approve to have some "frontend eyes" on this?

[netzartist]

Looks fine for me.