Tinymce param additions

Added the 2 missing params to tinymce for easy configuration.
+ Added 'filemanager_subfolder' param
 eg: 'filemanager_subfolder:"subfolder/"'
+ Added 'filemanager_type' param
 eg: 'filemanager_type=1'
 type can be: 1,2,3,'image','media'
default = 2 (all file)