Mass conversion of all files to the newly agreed coding standard: PSR 1/2

core/API/DataTableGenericFilter.php

core/API/DataTableManipulator.php

core/API/DataTableManipulator/Flattener.php

core/API/DataTableManipulator/LabelFilter.php

core/API/DocumentationGenerator.php

core/API/Proxy.php

core/API/Request.php

core/API/ResponseBuilder.php

core/Access.php

core/Archive.php

core/Archive/Array.php

core/Archive/Array/IndexedByDate.php

core/Archive/Array/IndexedBySite.php

core/Archive/Single.php

core/ArchiveProcessing.php

core/ArchiveProcessing/Day.php

core/ArchiveProcessing/Period.php

core/AssetManager.php

core/Auth.php

core/CacheFile.php