Issue #2195183 by cleaver, zopa, elgordogrande, sandykadam, jhodgdon, joachim, Eda: document Batch API callbacks as callback implementations

Issue #2364047 by JvE, dcam: Fix missing file definitions in hook_theme() in the Update Manager module

Issue #2340675 by er.pushpinderrana, David Hernández: Clarify first, unused argument docs in update_calculate_project_update_status()

Issue #952394 by xjm, webchick, sun, catch | yettyn: "No available releases found" - fetching update information exceeds timeout.

Issue #1036780 by Mike Wacker, tim.plunkett | cafuego: Enabled Drupal.org to collect stats on enabled sub-modules and core modules.

Issue #1343768 by JamesOakley, eMPee584: Fixed make update_calculate_project_update_status() work nicely with HEAD releases.

Issue #1263040 by catch, akamaus, luk.stoops: Fixed No notifications sent when updates are available.

Issue #1481156 by lucascaro, npiacentine: Fixed Incorrect logic in creating url to fetch information about project updates.

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

Issue #278425 by andypost, droplet, OnkelTem, chx, c960657, drewish, kotnik, realityloop: Change notice for: Using basename() is not locale safe.

- Patch #565288 by bfroehle, anarcat, p.brouwers, aspilicious: cannot install Drupal when Drupal.org is 503 (at Drupalcon!).

- Patch #1265586 by James_Stallings, edmund.kwok: remove bitter tasting 'bile' in core documentation ;).

Issue #1125662 by catch, Gábor Hojtsy, bfroehle: Fixed UpdateTestContribCase fails on sites with contrib modules/themes in the filesystem.

Issue #647964 by jergason, bfroehle, Damien Tournoud, corbacho, Pancho: Fixed Running cron does not check for available updates.

- Patch #843162 by pwolanin, Scott Falconer, Berdir, jhodgdon, a.mikheychik, mtift: creating vocabularies with machine-names 'List' or 'Add' breaks links in taxonomy overview admin area.

Issue #908282 by jbrown, pillarsdotnet: add width and height attributes to increase front-end performance.

#1019834 by bfroehle: Fixed No .info files reported on theme upload when zip created with certain programs

#976328 by bfroehle, dww: Fixed Update manager should not take you out of maintenance mode unless you asked it to

#686060 by Crell, David_Rothstein, dww, yoroy, carlos8f, et al: Fixed Explain that the Update manager only works if you have FTP or SSH access to your server

#997802 by David_Rothstein, dww: Fixed Update manager doesn't allow you to install a project if it finds a single 'broken' module in it

#936490 by dww, fago: Fixed Update module should verify downloaded tarballs and propagate errors correctly

#1005934 by rfw, dww: Fixed UpdateTestUploadCase->testUploadModule() raises an exception during testing with E_STRICT

#915174 by sdboyer, sun: Remove pointless files[] declarations on files that are not declaring classes.

#936490 by dww, tstoeckler, haydeniv, Bojhan: Fixed Update module should verify downloaded tarballs and propagate errors correctly