Clean up integrity check

[jernst]

It currently reports this. All of this is benign, but ugly.

Technical information
=====================
The following list covers which files have failed the integrity check. Please read
the previous linked documentation to learn more about the errors and how to fix
them.

Results
=======
- core
	- FILE_MISSING
		- composer.json
		- composer.lock
		- package-lock.json
		- package.json
	- INVALID_HASH
		- lib/versioncheck.php

Raw output
==========
Array
(
    [core] => Array
        (
            [FILE_MISSING] => Array
                (
                    [composer.json] => Array
                        (
                            [expected] => 41be41bd93816ae273d36ce7834cfc82d713bdcc115b81474e7ea545d05a375a7ac953430eaeab4ef1e6ecb9339311990d50d08c6f2fd1db7fd68c1ce5a98f61
                            [current] => 
                        )

                    [composer.lock] => Array
                        (
                            [expected] => 7eb5da42d355b68654a333238e5beb98f9202a900ae4a1bfa3697a279d049172c7888fceef586685aa03086af03dee5a864248248e6d7eeb4700a158fbc58018
                            [current] => 
                        )

                    [package-lock.json] => Array
                        (
                            [expected] => 10a437c8e064b7503ecf464e6ec9831847f7cc1ebc80853bc9d63f8359c2bb0354b7ca857eab1c60db4ebf842aaf0399f6502a6eee37b4aac6679408a9791fee
                            [current] => 
                        )

                    [package.json] => Array
                        (
                            [expected] => 85e27298223eb978103e7cb5dddf2dea1425c9a2c372b409286e288a67c5d60f530ebd8402f509e942d4aadc74ece309ae337e3c44c04134c97c5c212282abd1
                            [current] => 
                        )

                )

            [INVALID_HASH] => Array
                (
                    [lib/versioncheck.php] => Array
                        (
                            [expected] => 93f46bc4c5c97d5657d01a7f1271dde36cc2532ee7544698b1137a0ebca53d7ef992fc48db486fe907a60c5cb8cf119941a39039446eb42e6825815f99bf34cd
                            [current] => 3fd0ce0d67d48c76acaecf7acedc235bb499bf335f2dc5b4bf6f3b7c862db29ec334dbcabc551b1ef3cbeef53c58ffb62d279f061b7e2aef0d008f3098a55ae4
                        )

                )

        )

)