KML Creation

Create KML files optionally off of the logs as they are extracted
from the UAV.

Add QuaZip to support the creation of kmz files.

Also realized that the "Stop" button did not work while pulling log files, so added that as well.

(Note: Not sure if including QuaZip in this way is the right approach, but in order to create .kmz files, this seemed like the most straightforward solution.)