Update parse-server to version 2.4.0 🚀

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Hello lovely humans,

parse-server just published its new version 2.4.0.

State	Update 🚀
Dependency	parse-server
New version	2.4.0
Type	dependency

This version is not covered by your current version range.

Without accepting this pull request your project will work just like it did before. There might be a bunch of new features, fixes and perf improvements that the maintainers worked on for you though.

I recommend you look into these changes and try to get onto the latest version of parse-server.
Given that you have a decent test suite, a passing build is a strong indicator that you can take advantage of these changes by merging the proposed change into your project. Otherwise this branch is a great starting point for you to work on the update.

Do you have any ideas how I could improve these pull requests? Did I report anything you think isn’t right?
Are you unsure about how things are supposed to work?

There is a collection of frequently asked questions and while I’m just a bot, there is a group of people who are happy to teach me new things. Let them know.

Good luck with your project ✨

You rock!

🌴

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The new version differs by 448 commits .

• 47e2db6 ⚡ Release 2.4.0 (#3816)
• 4e9e33c chore(package): update pg-promise to version 5.7.0 (#3815)
• 691cf59 Adds count class level permission (#3814)
• d71683a Code maintenance, small refactors (#3811)
• ab5b759 [CI] test with 6.10 and 7.10, mongoDB 3.2 and 3.4 (#3787)
• f40019a build docker images on docker hub
• 391ac97 [ops] use build stages in travis (#3810)
• 88de01f Fix issue _PushStatus stuck sending (#3808)
• 4a724e8 chore(package): update uws to version 0.14.5 (#3809)
• ad72226 fix(package): update pg-promise to version 5.6.8 (#3800)
• cc97067 chore(package): update mime to version 1.3.6 (#3807)
• b5c5d91 chore(package): update cross-env to version 5.0.0 (#3804)
• 10c7cb0 requiresAuthentication is self-sufficient for ACL's (#3784)
• 877ef78 Improve email verification (#3681)
• 81a55e6 chore(package): update nyc to version 10.3.2 (#3785)

There are 250 commits in total. See the full diff.