eslint for mobile + new maps API key + cleaning

mobile/traque-app/util/constants.js

@@ -0,0 +1,13 @@
+export const InitialRegions = {
+    paris : {
+        latitude: 48.864,
+        longitude: 2.342,
+        latitudeDelta: 0,
+        longitudeDelta: 50
+    }
+};
+
+export const ZoneTypes = {
+    circle: "circle",
+    polygon: "polygon"
+};