F presentation map

Solves #144 

Integrate icons in the edit and presentation mode
- show icons in actor details
- show icons on the map
- the icon will be changed after choosing a new type from the dropdown menu
- include icon for unknown organization type

Editing view:
![](http://screencloud.net/img/screenshots/a597b290a50767619e0d40b3da8c46d3.png)
![](http://screencloud.net/img/screenshots/97a4537b8f5f304f7932b44fb7fffb81.png)

Presentation view:
![](http://screencloud.net/img/screenshots/76a71f368361dc62bdcecf9358d51ab5.png)
![](http://screencloud.net/img/screenshots/9daa8d93584303b564c44a168811bbc2.png)