Issue #447: Skip Views sanitation of classes when empty.
Merge pull request #576 from quicksketch/447/views_skip_classes

Issue #447: Skip Views sanitation of classes when empty.
Issue #448: Reduce the number of field suggestions within Views for performance.
Issue #437: Change page title when layout overridden.
Issue #430: Removing $page_top variable.
Merge pull request #580 from dougvann/issue-430

Issue #430: Removing $page_top variable.
Issue #242: Remove export functionality from book module.
Merge pull request #579 from BWPanda/437/page-title-override

Issue #437: Change page title when layout overridden.
Issue 453: Fixing backwards-compatibility mode for Drupal behaviors.
Merge pull request #586 from quicksketch/453/fix_drupal_js

Issue 453: Fixing backwards-compatibility mode for Drupal behaviors.
Issue #455: Sort options alphabetically when exporting configuration.
Issue #456: Remove rogue calls to drupal_* functions in core.
Issue #407: Fixed create account link shows on user login block when only administrators can create accounts.
Issue #304: Rename the 'main menu' menu to 'primary navigation'.
Merge pull request #588 from quicksketch/456/update_drupal_calls

Issue #456: Remove rogue calls to drupal_* functions in core.
Merge pull request #587 from quicksketch/455/sort_config_export

Issue #455: Sort options alphabetically when exporting configuration.
Merge pull request #583 from jenlampton/242-remove-book-print

Issue #242: Remove export functionality from book module.
Merge pull request #528 from jenlampton/304-rename-main-menu

Issue #304: Rename the 'main menu' menu to 'primary navigation'.
Merge pull request #539 from jenlampton/407-create-link

Issue #407: Fixed create account link showing.
Merge pull request #577 from quicksketch/448/views_reduce_field_suggestions

Issue #448: Reduce the number of field suggestions within Views for performance.