Toolset Access 2.9.1

* Fixed an issue with editor permissions to create new post
* Added next and previous post links when Access permissions are applied
* Added dashes into the list of allowed symbols in custom capabilities
* Fixed issue when default custom error for no read permission is set

Added ability to use theme settings in layout that is set as custom error.

• Improved the way that Access settings are handled
• Improved the way that predefined capabilities are stored
• Fixed an issue with removing level capabilities from custom roles
• Fixed a caching issue when detecting the current page ID
• Fixed an issue when previewing a post that contains a view