Demo needs more Repetable Field examples.

[karandatwani92]

We inspect and test many Bugs using the demo. BUT
While working on Bug reports related to the Repeatable Field, I found that we have used it in one way only:

• As a fake features field in Monster & Product CRUD. EVEN when both have the dedicated column in DB/migrations.

And I think we should do:

• One Fake Example
• One Dedicated DB Example
• One in the uploads tab, with all the uploader types.