Fix test summary in daily tests

[calebcartwright]

Fixes #3054

Apparently mocha 6's new auto-config discovery only works with dotfiles. This renames our mocha rc files accordingly: mocharc.yml --> .mocharc.yml and solely to be consistent mocharc-frontend.yml --> .mocharc-frontend.yml

• https://github.com/mochajs/mocha/blob/master/lib/cli/config.js#L23
• https://mochajs.org/#configuring-mocha-nodejs
• https://github.com/mochajs/mocha/blob/master/CHANGELOG.md#tada-enhancements-1

[shields-ci]

	Warnings
⚠️	This PR modified package.json, but not package-lock.json - Perhaps you need to run npm install?

	Messages
📖	✨ Thanks for your contribution to Shields, @calebcartwright!

Generated by 🚫 dangerJS against 3806d08

[paulmelnikow]

🤦‍♂️

[shields-deployment]

This pull request was merged to master branch. This change is now waiting for deployment, which will usually happen within a few days. Stay tuned by joining our #ops channel on Discord!

After deployment, changes are copied to gh-pages branch: