[web] Update packages, use TS 2.4

web/package.json

Index: web/package.json
diff --git a/web/package.json b/web/package.json
index a2287694b2dc532b356740ba9b231601f9727207..73209d600224621fcf1fc370109577ba6bd9f95a 100644
--- a/web/package.json
+++ b/web/package.json
@@ -1,30 +1,36 @@
 {
+  "name": "luci",
+  "version": "0.0.0",
+  "homepage": "https://github.com/luci/luci-go",
+  "author": "The LUCI Authors",
+  "license": "Apache License, Version 2.0",
   "private": true,
+  "dependencies": {},
   "devDependencies": {
     "bower": "~1.7.9",
     "browser-sync": "^2.7.7",
     "connect-history-api-fallback": "^1.1.0",
     "del": "^2.0.2",
     "glob-all": "^3.0.1",
-    "gulp": "^3.8.5",
+    "gulp": "^3.9.1",
     "gulp-autoprefixer": "^3.1.0",
     "gulp-cache": "^0.4.0",
     "gulp-changed": "^1.0.0",
     "gulp-clang-format": "^1.0.23",
+    "gulp-clean-css": "^3.5.0",
     "gulp-debug": "^3.0.0",
     "gulp-gh-pages": "^0.5.4",
     "gulp-html-extract": "^0.1.0",
+    "gulp-htmlmin": "^3.0.0",
     "gulp-if": "^2.0.2",
     "gulp-imagemin": "^2.2.1",
     "gulp-jscs": "^3.0.0",
     "gulp-jscs-stylish": "^1.1.2",
     "gulp-jshint": "^1.6.3",
     "gulp-load-plugins": "^1.1.0",
-    "gulp-minify-css": "^1.2.1",
-    "gulp-minify-html": "^1.0.2",
     "gulp-replace": "^0.5.4",
     "gulp-size": "^2.0.0",
-    "gulp-sourcemaps": "^2.4.0",
+    "gulp-sourcemaps": "^2.6.0",
     "gulp-tslint": "^7.0.1",
     "gulp-typescript": "^3.1.3",
     "gulp-uglify": "^1.2.0",
@@ -35,7 +41,7 @@
     "merge-stream": "^1.0.0",
     "run-sequence": "^1.0.2",
     "tslint": "^4.2.0",
-    "typescript": "~2.3",
+    "typescript": "~2.4",
     "vulcanize": "^1.15.4",
     "yargs": "~4.8.0"
   },