Prevent https://www.gstatic.com/charts/loader.js URL from minification

[yyevgenii]

This PR is a duplicate of the #91 which was overridden by @tnikcevs in #92

The fix for a dashboard graph:
When 'JS minification' is enabled in config (Stores>Configuration>Advanced>Developer>JavaScript Settings>Minify JavaScript Files = Yes),
Magento2 tries to load all resources (that loaded via require.js) using .min.js suffix and URL, which is used for building graph (https://www.gstatic.com/charts/loader.js)
will be replaced by 'https://www.gstatic.com/charts/loader.min.js' and the customer gets 404.
Here is an example: magento/magento2#5835 (comment)

[hostep]

@yyevgenii & @vvuksan : this is the wrong way to do this, can we please please revert this, it will break the tinymce editor in the backend of Magento when you do this and have minify js enabled.

But first verify if that's actually the case, I'm pretty sure it will, since I'm speaking from a lot of experience here.

More context in this thread: magento/magento2#11577 (comment)

And a fix which comes in Magento 2.3, which will allow you to do what you proposed, but will require you to add an extra level of xml nodes, then the minify_exclude values will be actually merged instead of being overwritten: magento/magento2#13687

To have it fixed in Magento 2.1 and 2.2, the best way I've found is by using a plugin, like this:
https://magento.stackexchange.com/a/198480/2911

[vvuksan]

It has been reverted.

[yyevgenii]

Thank you @hostep and @vvuksan