Make Equalizer Responsive

[tyrantkhan]

#4882 Made Reference to this

The issue comes up if you have set equalize_on_stack to true. I opted for a solution where you set the media query on the parent, and not on a per element basis.

Maybe there is value in having it there for both objects, but I'm not sure that's feasible given the current implementation. I was not looking to do a whole rewrite.

Finally, I would have liked to put the value in just the data-equalizer attribute, but Nested elements are actually using that space, so i opted for a new attribute data-equalizer-mq. If you set it to some non-existant query like data-equalizer-mq="only-megalarge", the plugin will just ignore your media query request and continue as if you passed no media query.

[tyrantkhan]

i messed up my fork a bit by doing the PR off master, so i purged it, i'm going to resubmit this again in a bit.