Add parameter and context passing

• Type: Technical Task
• Status: Open
• Resolution: Unresolved
• Affects Version/s: None
• Fix Version/s: None
• Component/s: Portal Services, Portal Services > Templates Engine
• Labels: None
• Git Pull Request: https://github.com/brunobasto/liferay-portal/pull/704

The template should be able to process and render parameters passed from the user.

By default a minimum set of default values should also be send to the template. The VM and FTL are getting a lot of parameters including the request. For soy the list could be smaller and would be extended if necessary.