* Fixed default action menus icons
* Moved workspace management's css and script defines to corresponding
view.xhtml
* Added table fix function to workspace materials view
* Added new custom css for ckeditor
* Seperated materials-reading view's css rules from workspace generic
css
* Changed every em and pt font-size rule to px in workspace views
* Changed em and pt font-size rules to px in _widgets.scss
* Renamed workspace materials body class to workspace-materials