(/=) Prevent crash for unknown sensor types.

-show some text (“unsupported sensor”) instead
(!) Fixed indentation.
Added some unimportant Sensor cases

- Added : Step Detector and Game Rotation Vector
- Used Ctrl + Shift + F
Changed to API 18

- Changed to API 18 and added a Space in the Strings for Temperature and
Humidity
My part for Task 4

- Please read the answers once and tell me if you guys are fine with
those
- Also you can make it look better if you want since I am not that good
with LaTeX yet.
Merge definitive