DB migration : Use relative paths for apps

src/main/resources/db/migration/V4_0__UpdateAppsPaths.sql

+UPDATE app SET link='/ViewerProject/GraphViewer.html' WHERE id=2;
+UPDATE app SET link='/3c/index.html' WHERE id=3;
+UPDATE app SET link='/Papaya/standard-with-atlas/index.html' WHERE id=7;
+
+UPDATE app SET image='/logo-geneexpression.png' WHERE id=1;
+UPDATE app SET image='/logo-3d-explore.png' WHERE id=2;
+UPDATE app SET image='/logo-3c.png' WHERE id=3;
+UPDATE app SET image='/logo-bargraph.png' WHERE id=4;
+UPDATE app SET image='/logo-sunburst.png' WHERE id=5;
+UPDATE app SET image='/logo-3d-brain.png' WHERE id=6;
+UPDATE app SET image='/logo-2d-atlas.png' WHERE id=7;
+UPDATE app SET image='/logo-graphviewer.png' WHERE id=8;