Draw Widget: nls, icons, current mode label, stop, reset btns

-added nls support
-using font for draw button icons
-added current draw mode label
-reformatted draw button layout using list.  Allows button layout to wrap as width of widget changes
-added stop drawing button.
-graphics are no longer removed from map when widget is closed, clear button will remove graphics

![image](https://cloud.githubusercontent.com/assets/6778840/5058581/b74dac82-6cc4-11e4-9081-6f5131c4deee.png)