Issue #2901562 by mfernea, Jo Fitzgerald, Yogesh Pawar, 3ssom, Mile23, borisson_: Fix 'Squiz.WhiteSpace.SuperfluousWhitespace' coding standard

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2557265 by claudiu.cristea, Wim Leers: Synchronize editor status with paired text format status