Update grunt packages

[slaFFik]

Attached is a list of grunt packages that are outdated right now.
BuddyPress already had an issue with outdated grunt-contrib-imagemin, so I suppose it's a good idea to update others as well.

[DJPaul]

Did you test these? I ask because changing the first digit in this semver pattern normally indicates a breaking change, when it changes. :)

[DJPaul]

Netweb said:

Don’t update CSSJanus, replace with RTLCSS (There’s a ticket for that)

[00:18]
Don’t update grunt-util-legacy, it will fail

[00:19]
Upgrading CSSMin will start throwing deprecation errors for banners

[00:19]
Don’t update grunt, there will be conflicts between WP, BP & bbP with that one :disappointed:

and

The grunt-contrib-uglify is a big update, it changes a huge amount of minified JS, but the only sane way to test the update is to commit it and roll with it, letting it soak in /trunk for a while and having peeps test using the /build folder for weirdness in the JS department is essential IMHO

[djpaul]

In 10704:

Build tools: update some npm packages to latest stable versions.

See #6958

Props slaFFik, netweb

[DJPaul]

Can someone test:

Clean trunk
NPM install
Change grunt-contrib-uglify to "~1.0.0"
NPM update

Do you get an error that looks like this? ​https://gist.github.com/paulgibbs/de9be943ef5076b1c020462e797df94c

I do, netweb doesn't, we need a second opinion!

[netweb]

Also may be worth adding I'm using NPM version .3.8.6 and NodeJS version 5.10.0 locally

Have just update to NodeJS version 5.10.1 and also works as expected

[netweb]

Core has now also updated grunt-contrib-uglify from ~0.10.0 to ~1.0.1 in ​wp:changeset:37212

There were/are no issues with Travis CI:

• Build: ​https://travis-ci.org/aaronjorbin/develop.wordpress/builds/123378689
• Job: ​https://travis-ci.org/aaronjorbin/develop.wordpress/jobs/123378698#L239

[netweb]

Yolo'd in r10973

The issues I noted in ​https://buddypress.trac.wordpress.org/ticket/6958#comment:4 still stand I believe, will test and add feedback as needed.

[DJPaul]

I think this is done. Everything seems to be working.