New module for config creation tool.

[toniwidmo]

Module should create two panel inside the contentArea, on the left a form, on the right a display of the generated config file.

• The form should contain all the necessary options contained in a typical config file.
• Changing any element in the form should automatically update the content.
• The site config should be saved in a global.
• A preview button should alter the site to use the new config settings.
• A 'Restore' button should always be added to the preview, that reloads the saved site config.

[toniwidmo]

If BlockPress is ever extended with a backend language support, such as nodejs or php, then this tool should be easy to extend in such a way that it can update the actual config, although admin authentication would be required.