Always have tracker.config[:rails] by default

to avoid having to check for it

Avoid reporting duplicate symbol conversion warnings

Added --only-files option to specify specific paths to scan

Conflicts:
	test/tests/test_rails3.rb

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Only treat controllers like controllers

and treat non-controller classes in controller files
as if they are modules that might contain a controller

Fix errors raised on reports which use --separate-models option

* warning_code was missing, and the fingerprint method on warning relies
on it always existing

Don't warn on id calls

Remove deprecated config locations