Spaces in the "id" property make the "preview" non functional

[boboka]

Should not allow spaces in the "id" field of the components.
There might be other properties that does not allow spaces or other special characters.

I just accidentally pasted a space as the first/last char for some components and noticed that the Preview was not working after that sometimes. Then tried with "id"s including spaces in the middle, it accepted it and Preview only showed a background color.

Took me a while to figure it out why the Preview is no longer working in my test project.

[aconran]

Thanks, we will be providing additional validation on the id configuration.