Booster Template: Compiled template engine

This class implements a compiled template engine.

It processes templates and generates PHP script files that generate the template output when executed.

The template variables are defined as arrays which are extracted into local variables before including the compiled template script files.

The template engine supports variables with optional modifiers, comments, including external template files, adding separate Javascript and CSS style definitions, localized text, inline PHP code, conditional sections and loops to iterate over array variables.