PublishPress Capabilities Pro 2.15.0

* Feature : Retain last role selection for Capabilities, Editor Features, Admin Menus, Nav Menus screens
* Perf : Sync role to all sites - Operation timed out on networks with ~100 sites
* Fixed : Some security scans flagged an unused file in external library "chosen". That file (and other developer documentation files) has been removed
* Feature : Added ability to block custom metaboxes on Editor Features screen #89
* Feature : Ability to hide elements by Ids or classes on Editor Features screen #134
* Compat : Permissions Pro - Custom Status capabilities checkbox grid did not include edit / delete capabilities if Approved is the only status with custom capabilities enabled

* Feature : Editor Features restriction (new screen to block editor elements per-role)
* Fixed : If Media "Create" capability is selected / unselected by clicking Media caption or Create caption, the corresponding upload_files checkbox (in Other WP Core Capabilities section) is not toggled, leading to an apparant update failure
* Fixed : If Media "Create" capability is negated or un-negated, the corresponding upload_files checkbox (in Other WP Core Capabilities section) is not toggled, leading to an apparant update failure
* Compat : Admin Menu restrictions did not block direct URL access to plugin screens
* Fixed : Error loading Settings screen if background communication to publishpress.com for key validation fails
* Fixed : On front end access, PHP Notice for undefined variable "menu" if Nav Menu restrictions are stored
* Fixed : PHP Warning if a role is stored without a valid capabilities array
* Fixed : Admin Menus restrictions failure, PHP Notices on PHP 5.6 sites

* Fixed : Fatal error on some installations
* Compat : PublishPress - Capabilities admin menu icon misaligned on some sites. To restore CSS workaround, define constant PP_CAPABILITIES_FIX_ADMIN_ICON