Update to NodeJS 10.7

Author: shepmaster

.travis/compile-frontend.sh

@@ -10,7 +10,7 @@ docker \
     -v $HOME/cache/node/node_modules:/ui/node_modules \
     -v $HOME/cache/node/yarn-cache:/root/.yarn-cache \
     --workdir /ui \
-    node:8.7 \
+    node:10.7 \
     bash -c 'yarn && \
              yarn test:lint && \
              yarn run build:production'

ui/frontend/package.json

@@ -61,6 +61,9 @@
     "webpack": "^4.1.0",
     "webpack-cli": "^3.1.0"
   },
+  "engines": {
+    "node": "^10.7.0"
+  },
   "scripts": {
     "test:lint": "tslint --config tslint.json --exclude \"./**/node_modules/**/*\" \"./**/*.ts?(x)\"",
     "build": "webpack --progress --colors --mode development",