and $CFG->modpixpath to $OUTPUT->mod_icon_url

MDL-16177 Detecting if script is called from URL, in which case it prints header, footer and form. Otherwise, silently create a global $generator object that can be used by unit tests.

MDL-18293 removed obsoleted checking of return values from insert and update_record + unused strings cleanup

MDL-15666 Fixed for HEAD. No longer any need for URL variables to run from browser. Doesn't generate quizzes properly yet.

MDL-15666 Testing a matrix of portfolio caller/plugin. Starting the new cleanup method in unit tests (max id)

MDL-15666 Unit tests for Forum portfolio callers now passing. But I'm getting intermittent errors from the generator, a problem with contexts during forum generation. Please ignore for now.

MDL-15666 Fixed error that caused blank page in unit test. Including generator library. Partly fixed generator.

MDL-15666 minor fixes to assignment portfolio callers, additional param for generator (assignment type), and unit tests for sha1

Refactored the generator script into proper Object Oriented code. It can now be used as a CLI tool, as a web form or as an included library with a function call. Stub implementation is demonstrated in portfolio unit tests.

MDL-16177 Added generation of forum discussions and posts, with multiple users and nesting of replies.

MDL-16177 Brought generator script from contrib to HEAD so it can be used and maintained by core developers.