Template configuration support

[johanjanssens]

This PR requires: joomlatools/joomlatools-framework#352

This PR adds support for per page Joomla template configuration. It adds a template config option to the process in the frontmatter.

---
process:
    template:
        name: Beez3
        config:
            templatecolor: red
        modules: ["Main Menu", 17]
---

Template config options

• name: Defines the name of the template to use
• config: Defines an associative array of template config settings
• modules: Defines a list of modules to include, either by name or by id

Note: when specifying a different template through name no default template config options will be loaded. If no template name is specified the active template config options will be loaded the the configdefines the overrides for the active template.

Including modules

By default modules are limited to the list provided. This allows to ensure no other modules then those listed can be present on the page. If the list is empty no modules will be included in the page.

Example: modules: ["Main Menu", 17]

Excluding modules

If the module name or module id is prepended with a '-' the module will be excluded instead. This allows any module expect the ones listed to be present on the page.

Example: modules: ["-Main Menu", -17]