#208768 by dvessel, Arancaytar: language direction should be in the HTML source, so it is more accessible even without CSS

#202821 by marco.robotangel: display messages above help in all core themes for consistent user feedback (usability)

#199809 by theborg: comment templates were not checking status properly (fix notice, allows themes to theme in-preview comments differently)

#196410 report by daniel.soneira, patch by myself, tested by Freso: several fixes to url() generation and path aliasing, fixing path aliases for node paths and front page links in themes

- Patch #141730 by Earl: allow theming system to use wildcards.  I promised in the issue that this patch would still go in, so here goes.

#141725 by Crell and dvessel: allow themes to define multiple CSS and JS files in their .info files, which can be clearly overriden

- Patch #137211 by merlinofchaos: move theme information to .info files and improved theme inheritance.

#127539: progressive operation support, refactoring update.php code to a generic batch API to support runnning operations in multiple HTTP requests
  - update.php is already on the batch API
  - node access rebuilding is in the works
  - automatic locale importing is in the works

 Thanks to Yves Chedemois (yched) for the good code quality, very wide awareness of issues related to batches,
 and the fantastic turnaround times. Hats off.

#51002: Admins could not see unpublished comments (plus minor usability enhancements for previewing/unpublished)