[web] Update packages, use TS 2.4

web/package.json

 {
+  "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",
     "gulp-useref": "^2.1.0",
     "gulp-vulcanize": "^6.0.0",
     "hydrolysis": "^1.24.1",
     "jshint-stylish": "^2.0.0",
     "merge-stream": "^1.0.0",
     "run-sequence": "^1.0.2",
     "tslint": "^4.2.0",
-    "typescript": "~2.3",
+    "typescript": "^2.4",

[iannucci, 2017/07/01 03:46:50]

Do we want this to break when 2.5 is released? (legit question, maybe we do?)

[dnj, 2017/07/01 15:16:06]

hmm, you're probably right. I'll pin this to 2.4 so we don't hit another
breakage.

     "vulcanize": "^1.15.4",
     "yargs": "~4.8.0"
   },
   "scripts": {
     "test": "gulp test:local",
     "start": "gulp serve",
     "lint": "gulp lint"
   },
   "engines": {
     "node": ">=0.10.0"
   }
 }