Adapt Joomla radio buttons style to JEM settings radio buttons

[Heklaterriol]

When working on #1861 I noticed, that the JEM setting readiobutton styling is very wide and not like in the Joomla settings.

So I propose to switch them to the Joomla styling:

JEM style:

Joomla style:

There is one minro point: when set to "No" or "Hide" the button is just grey and not red

Any objections to adjusting it to the Joomla settings style?

[jojo12]

I agree to the Joomla settings style!

[mckillo]

I agree too.

[Heklaterriol]

After some experiments I have a new suggestion: just make the buttons smaller:

[jojo12]

I like it, well done!