Update GazeTrack URL.

Author: prisonerjohn

contrib_generate/sources.conf

@@ -130,7 +130,7 @@
 218 \ https://github.com/cansik/sweep-processing/releases/download/latest/SweepProcessing.txt
 219 \ https://teddavis.org/xyscope/download/XYscope.txt
 224 \ https://github.com/BillKujawa/meter/releases/download/latest/meter.txt
-225 \ http://hci.soc.napier.ac.uk/GazeTrack/GazeTrack.txt
+225 \ http://web.tecnico.ulisboa.pt/augusto.esteves/GazeTrack/GazeTrack.txt
 238 \ https://github.com/cansik/realsense-processing/releases/download/contributed/RealSenseProcessing.txt
 239 \ http://skweezee.net/processing/download/SkweezeeForProcessing.txt