Feature/node-16

[jdenoc]

Node

• Updated to node 16.
• Stopped tailwind color deprecation warnings appearing in browser console.
• Removed deprecated entry.isEntryCurrent method.

Github Actions/Tests

• ~Updated the github actions actions/checkout to v3.~
• ~Updated the github actions actions/cache to v3.~
• Reduced build job timeout to 10 minutes within github actions.
• ~Updated github actions tests workflow to use newer method of setting output values. See https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands for details.~
• Added test start time to test name output to help better identify problem tests.

Documenation

• Minor documentation updates.

[jdenoc]

Merging based on the outcome of this action run.