Suppressing LOVD error messages during tests.
- getLOVDGlobals() was triggering an exit() from inc-init.php when called when not installed yet. - Let setMutalyzerServiceURL() not die when we're not installed. - ini_set() calls from inc-init.php were triggering warnings during CLI calls because output was already created. - Also, Selenium shouldn't be started as root - newer Firefoxes don't like it.
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