* 'get_repre_icons' have optional sync server
* local settings have optional sync server
* sync server is optional in sceneinventory
* sync server is optional in loader tool
* sync server is optional in library loader
* sync server is optional in host dirmap
* sync server is optional in nuke cache
* sync server is optional in integrate plugin
* added "sync_server" back to ignored modules for openpype package
* fix missing variable
* mark syncserver command as deprecated
* define 'SYNC_SERVER_ROOT'
* added method to receive icon paths
* use sync server module to receive icons
* fix scene inventory