update build and test (CodeceptJS) dependencies

[robocoder]

Q	A
Is bugfix?	❌
New feature?	❌
Breaks backward-compatibility?	❌
Tests pass?	✔️
Fixed issues	#875, #938
Updated README/docs?	❌
Added CHANGELOG entry?	❌

It looks like travis uses xenial 16.04 which defaults to nodejs 0.4

• add .nvmrc so it uses a newer version

nodejs 0.8 reached EOL in Dec 2019

• update package.json to specify >= 0.10

npm audit identified 18 vulnerabilities (5 low, 2 moderate, 11 high)

• updated package-lock.json after running npm audit fix --force

npm build identified out-of-date caniuse

• updated to latest version

tests/

• upgraded to CodeceptJS v3
• so added webdriverio explicitly to package.json
• ran "npx codecept3-upgrade tests" to migrate tests
• updated "codeceptjs_helper.js" to reflect API compatibility changes with grab*From() and grab*FromAll()
• bumped selenium image tag to 3.141.59-20210105

References:

• https://github.com/codeceptjs/CodeceptJS/wiki/Upgrading-to-CodeceptJS-3

[robocoder]

rebased from master

[schmunk42]

@robocoder Is this work in progress?

[robocoder]

Nope, it's done. But until it's merged I'll keep it up-to-date WRT package updates and changes to tests in master.

[robocoder]

I see #956, so I'll close this and resubmit for just CodeceptJS.