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

Issue #2595613 by swentel, krknth, heykarthikwithu, k4v, aerozeppelin, naveenvalecha, alexpott: '#title_display' => 'invisible' does not work for composite form elements

Revert "Issue #2595613 by krknth, heykarthikwithu, k4v, aerozeppelin, naveenvalecha, swentel: Forms - '#title_display' => 'invisible' is not working for radio buttons ?"

This reverts commit 5016b9c6.

Issue #2595613 by krknth, heykarthikwithu, k4v, aerozeppelin, naveenvalecha, swentel: Forms - '#title_display' => 'invisible' is not working for radio buttons ?

Issue #2473947 by Cottser, davidhernandez, rachel_norfolk, rteijeiro, cilefen, alimac, akalata, YesCT, mortendk: Prefix form-item-* classes with js-

Issue #2473951 by Cottser, cilefen, yannickoo, davidhernandez, LewisNyman: Prefix form-required classes with js-

Issue #1392754 by tss, justAChris, jhodgdon: Comply with new documentation standards for @file for namespaced class files

Issue #314385 by penyaskito, Pancho, mgifford, jjcarrion, jlbellido, akalata, alimac, jday, Risse, stBorchert | emmajane: Make position of #description configurable via the API.

Issue #697760 by sun: Replace getInfo() in tests with native phpDoc + annotations (following PHPUnit).

Issue #1419036 by lauriii, gnuget, wheatpenny, InternetDevels, oliverhm, scresante, patrickd | sun: Added a CSS class for form items that have no label.

Issue #2152217 by joelpittet, mgifford, vijaycs85, jjcarrion, sun: Remove theme_form_required_marker() from the theme system - use CSS instead.

Issue #2121775 by jessebeach: Make the markup associated with the required star on field items silent.

Issue #1363112 by mparker17, mgifford, tlattimore, Jacine, dcmouyard, bowersox, ry5n, ahdiaz: Simplify names of 'element-x' helper classes.

Issue #1711070 by kid_icarus, tim.plunkett, xjm, droplet, zendoodles and cam8001: Convert tests to use ::$modules property instead of parent::setUp($modules).