Fixes #5167 - Setup Elgg environment on Travis. Mocking session storage for installation process.
Notices fix
travis_installer.php cleanup and docs fix
Added time and memory stats to simpletests
Moved ElggTravisInstallTest to simpletest suite
Update local time_updated attribute value on entity update
Minor adjustments
More entropy to annotation name
Merge pull request #5549 from Srokap/ticket_5167

Fixes #5167 - Setup Elgg install on Travis