Add icons for video, presentation, photos

[VasBu]

• As an attachment (additional materials) to the outcomes can be: video, presentation and photos
• The outcomes page (http://localhost:1313/outcomes/) which includes list of outcomes have to include additional icons behind outcomes to announce that an outcome include video, presentation or photos.
• The existing solution display only icons for status of an outcome and if the outcome is featured outcome.
• the new icons has to be with a same style as status and featured sessions are.

[fzipi]

The support is there already. Maybe there are not many sessions with videos and/or presentations?