feat(chore): added testing page for jsfiddle fullscreen

[lubber-de]

Description

jsfiddle.net recently removed the feature to append a /show to any jsfiddle , which was then only showing the result of a jsfiddle. That was a very handy feature to review/test on mobile devices.

The only possibility now is to embed the jsfiddle into an iframe.

That said, this PR offers a little page which will display the result of any given jsfiddle in an iframe.
Maybe i was too lazy, but i could not find another public service which does just that.

I am aware, that codepen.io still offers that feature somehow by using /full instead of /pen in their URLs, but as we are using jsfiddle so much often i thought it's a good idea to still have this for jsfiddle as well.
However, i would still only use this when testing on a mobile device is necessary.

Testcase / Usage

Just append the jsfiddle code to a static URL

Examples

Original jsfiddle url	fomantic jsfiddle tester
https://jsfiddle.net/lubber/wt0heq5k/99	https://fomantic-ui.com/jsfiddle/#!lubber/wt0heq5k/99
https://jsfiddle.net/hpetaxy0	https://fomantic-ui.com/jsfiddle/#!hpetaxy0
https://jsfiddle.net/q3ptLkz6/12	https://fomantic-ui.com/jsfiddle/#!q3ptLkz6/12

Screenshots

[ko2in]

LGTM.

[exoego]

LGTM
The redirect to root is fine for me since I use repo-specific docpad.

[prudho]

LGTM

On a longer term we could give a try to Flems which seems to be really good for us in the documentation and for debug purposes.