[cors] Fix CORS headers generators
The Access-Control-Allow-* and Access-Control-Expose-Headers are response
headers, not request headers.
Hence, we need generators for them. Closes #4412575.
FCKConfig.AutoDetectLanguage = false ;
FCKConfig.ToolbarSets["Default"] = [
['Bold','Italic','Underline'],
['OrderedList','UnorderedList'],
['Link'],
['Table']
] ;
// 'Flash','Select','Textarea','Checkbox','Radio','TextField','HiddenField','ImageButton','Button','Form',
FCKConfig.ContextMenu = ['Generic','Link','Anchor','Image','BulletedList','NumberedList','Table'] ;
FCKConfig.LinkUpload = false ;
FCKConfig.LinkBrowser = false ;
FCKConfig.ImageUpload = false ;
FCKConfig.ImageBrowser = false ;
FCKConfig.FlashUpload = false ;
FCKConfig.FlashBrowser = false ;