Minor layout improvements

[mdutoo]

Light / Scaffolder template :

• OK add line breaks between the Submit button and the next service
• if the response is HTML or text, include it as such by replacing the "value" field by true HTML. If there is not enough space, wrap and allow the height to be dynamic.
• LATER study how to better handle big responses, like opening a new big iframe on rollover...
• LATER study how XML (JSON) responses can be best displayed by default, such as format it prettily and include it the same way

  Core / Discovery UI :

• OK resizing support small sizes
• LATER study how to best let the Discovery UI share the Talend hack hosted in the Registry (router ??)

[mkalam-alami]

• add line breaks between the Submit button and the next service

It was fixed just before releasing 0.3