`grunt custom` should minify - also should add excluded modules to headers

[mathias]

It would be useful if e.g. grunt custom:-deprecated would also create a dist/jquery.min.js.

IMHO having to run grunt min after creating a custom build is confusing. Imagine the following scenario:

• A dev checks out the jQuery repo, runs grunt to create a full build, and runs some tests.
• Later the dev decides to create a custom build, and runs grunt custom:-ajax.
• Now there is a dist/jquery.min.js, but it’s not the minified version of the custom build.

I suppose this could be solved quite easily by making grunt custom or (even better) grunt build run grunt min afterwards.

[dmethvin]

We need to change the comment header for both files to indicate that it is a custom build and which modules were excluded.

[gnarf]

​https://github.com/jquery/jquery/pull/856

[Corey Frang]

grunt custom saves minified version automattically. Close gh-856, Fixes #12059

Changeset: faf2eb4a8f9ff26f43773128ed2be8283314b3b6