Issue #1969276 by effulgentsia, tim.plunkett, EclipseGc: Refactor block plugins to make room for a BlockBase::build() implementation.

Issue #1946428 by foopang | mtift: Convert all of confirm_form() in menu.admin.inc to the new form interface.

Issue #1963976 by shanethehat, Cottser: Remove theme_views_tab() and theme_views_tabset() declarations from views_ui_theme().

Issue #1963798 by tim.plunkett, damiankloip: Fixed Page displays cannot be deleted unless they have a valid path.

Issue #1967728 by Wim Leers: Fixed In-place editing toolbars in DOM not removed after stopping in-place editing.

Issue #1937824 follow-up by echoz, mariacha1: Simpler fix for Improve button-link spacing on confirm form.

Issue #1849610 by mgifford, edrupal, dawehner, rootwork, falcon03: Improve 'add' links accessibility.

Issue #1967420 by tim.plunkett, dawehner: Allow Core\AnnotatedClassDiscovery to pass all parameters to the constructor of Component\AnnotatedClassDiscovery.

Issue #1946414 by larowlan | mtift: Convert confirm_form() in forum.admin.inc to the new form interface.

Issue #1964880 by falcon03 | jessebeach: Convert the Overlay close button from an anchor element to a button element.

Issue #1829328 by Christian Biggins, larowlan | falcon03: Fixed Adding a new content type, 'default parent item' is shown even if no menu is selected.

Issue #1033116 by eojthebrave, c4rl, brianV, tim.plunkett | webchick: Rename template.php to THEMENAME.theme to elimnate ambiguity around 'the template file' vs. 'template files'.

Issue #1867382 by Berdir, Sutharsan:  Convert drupal_http_request() usage in statistics.module to Guzzle.

Issue #1847768 by rootatwc, tim.plunkett, effulgentsia, Crell, Damien Tournoud: Remove ip_address().

Issue #1924992 by tim.plunkett, kim.pepper, damiankloip, amateescu: Convert user's system_config_form() to SystemConfigFormBase.

Issue #1942170 by vijaycs85: Fixed Make Taxonomy module active config save format match the default yml file.

Issue #1942152 by vijaycs85, rajneeshb: Fixed Make Menu module active config save format match the default yml file.

Issue #1942110 by sidharthap | vijaycs85: Fixed Make breakpoint active config save format match the default yml file.