1. Distance-scale indicator would be more visible if it appears inside the bounding box, and so it doesn't get hidden below the export-button. <img width="587" alt="screen shot 2016-10-26 at 2 53 33 pm" src="https://cloud.githubusercontent.com/assets/5114135/19742829/66685f76-9b8c-11e6-9c1f-aa3a90ae1bad.png"> 1. Zoom-slider have to be fixed proportionally to the bounding-box right-bottom corner. <img width="231" alt="screen shot 2016-10-26 at 3 02 03 pm" src="https://cloud.githubusercontent.com/assets/5114135/19743374/acc27fd6-9b8e-11e6-9bb1-0db3b070f958.png">
