Issue #1552412 by duellj: Make API links point to D8 version, and where possible make them future-proof

Issue #1443202 by TravisCarden, tim.plunkett, xjm: Make sure hook_preprocess documentation points to real funcions

Issue #1558548 by tim.plunkett, sun: Fixed Notice: Undefined index: default_image() in image_field_prepare_view().

- Patch #1552744 by Rob Loach, effulgentsia, sun: Fixed Bootstrap for the Dependency Injection Container and make sure SimpleTest abides to it.

- Patch #1552744 by Rob Loach, effulgentsia, sun: Fixed Bootstrap for the Dependency Injection Container and make sure SimpleTest abides to it.

- Patch #1404198 by sun, beejeebus, fago, chx: Separate database cache clearing from static cache clearing and data structure rebuilding.

Issue #1550454 by tim.plunkett, xjm: Fixed Regression: Following taxonomy entity conversion, Taxonomy EFQ causes warnings and notices.

Issue #822128 by roborn, JamesK, nod_: Fixed 'Textarea + summary' widget broken when field allows multiple values.

Issue #1419968 by nod_, tim.plunkett, droplet, cosmicdreams: Replace $('selector', domelement) with $(domelement).find('selector').

Issue #1036780 by Mike Wacker: Added Drupal.org should collect stats on enabled sub-modules and core modules.

Issue #1355526 by cafuego: Added a way to determine the date a module was added so the modules page can use it for sort.

- Patch #1183208 by effulgentsia, Niklas Fiekas, katbailey, no_commit_credit, catch: remove variable_get()('clean_url()') and switch to index.php/path pattern for dirty URL support.

Issue #1484216 by Berdir, beejeebus: Fixed Race condition in  _update_create_fetch_task() (PDO Exceptions).

Issue #1490150 by duellj, catch: Fixed EntityFieldQuery::pager(0) generates PHP error 'divide by zero'.

Issue #1172560 by bas.hr, bellesmanieres, NROTC_Webmaster: Fixed The block X was assigned to the invalid region Y and has been disabled.

This reverts commit 4079eb2d.

Issue #1348758 by drewish: Fixed Add an index to {users}.picture so user_file_delete() isn't insanely slow.

Issue #1361234 by duellj, loganfsmyth, aspilicious, cosmicdreams, fago, amateescu, sun: Added Make the node entity a classed object.

Issue #1160566 by Dave Reid, bdlangton, aspilicious, fago, cosmicdreams, tstoeckler, tim.plunkett, Berdir, sun: Entity_load() is actually entity_load_multiple().

Issue #1277776 by sun: test cleanup for generic field/property getters/setters (with optional language support) for entities.