versioncontrol 6.x-2.0-rc1

Changes since 6.x-2.0-beta8:

• Properly escape person names when printing them in views.
• Properly escape label names when printing them in views.
• #1291904 follow-up: Documentation updates on example backend module.
• #1291904 follow-up: Minor documentation block formatting.
• #1291904 follow-up: Documentation files tweaking.
• #1291904 follow-up: Moves the backend module to an examples directory.
• #983926 follow-up: Removes unused repository authorization_method.
• Make use of the flush option for the vc-sync drush command.
• Minor documentation fix on vc-sync drush examples.
• Set the not nested save option on repository locking operations.
• Better handling of default webviewer_url_handler on admin form.
• Show an error if needed on fetch failure via ui.
• #1880258 by jh3: Fixed Undefined index: places in versioncontrol_handler_field_item_revision_visual_diffstat()->render().