bug fix on \Phire\Config::toArray()
bug fix on \Phire\Config::set() method
Output::set_header updates
added version constant
updated doc comments for bootstrap and config classes
continued updates to doc comments
\Phire\Database doc comments done
all files in phire root directory have been updated
bug fixes on Module base controller
\Phire\Model::$modelRow set as protected so can be overridden
Merge branch 're-doc' into dev-v2

Conflicts:
	CHANGE.log
bug fix on \Phire\Config::get() method
finished the DOC overhaul (again) now ready for 2.2.1