Merge pull request #82 from Mikeyhun/master

Access Keys as additional security
Tinymce param additions

+ Added 'filemanager_subfolder' param
  eg: 'filemanager_subfolder:"subfolder/"'
+ Added 'filemanager_type' param
  eg: 'filemanager_type=1'
  type can be: 1,2,3,'image','media'