Issue #1662974 by barraponto, droplet, Albert Volkman, nitvirus, roborn, David Hernández: Clean up css in dblog.
Merge pull request #331 from quicksketch/adamtothemoon-207-Css-clean-up-dblog

Clean up css in dblog
Issue #1574512: Clean up CSS selectors for block.
Merge pull request #332 from quicksketch/211/block-css-selectors

Issue #1574512: Clean up CSS selectors for block.
Issue #2012526 by mcjim: Remove drupal_add_css() from book.module and use #attached.
Merge pull request #333 from quicksketch/adamtothemoon-207-Remove-css-book

Issue #2012526 by mcjim: Remove drupal_add_css() from book.module and use #attached.
Issue #2015789 by fubhy, echoz, rteijeiro, LewisNyman, penyaskito: Remove language_css_alter() (RTL stylesheets) in favor of HTML 'dir' attribute.