IBX-7873: Add links to interactive demos to dev guide

[dabrt]

Question	Answer
JIRA Ticket	IBX-7873
Versions	4.6 and up
Edition	all

Add links to interactive demos to dev guide

Checklist

• [x] Text renders correctly
• [x] Text has been checked with vale

[juskora]

General comment, I think we can discuss about a separate space for all those videos 'cause in this form it looks little bit messy as these video are placed in different places, hard to find at first glance and lacks consistency.

[julitafalcondusza]

I agree with @juskora - it lacks consistency. Each page should have same placement of the video. In "Content management product guide" you can easily miss interactive demo - it is placed in the middle of the content, between many other images, so you just keep scrolling. I like the idea of "Click to see an interactive demo" frame. I think that you could use it in all the pages. So: same placement, same style.