Add quick script to run server.go

Build and extract bower_components to the local directory from
buck-out. This is easier than modifying server.go to serve from a zip
file.

Running `bower install` before server.go was the last remaining usage
of bower.json, so we can just remove it.

Change-Id: Ic4717a3a1652ad08e1cef871c0a207c2c382aa35

polygerrit-ui/README.md

@@ -18,10 +18,7 @@ nodejs.org](https://nodejs.org/en/download/).
 To test the local UI against gerrit-review.googlesource.com:
 
 ```sh
-cd polygerrit-ui
-npm install
-bower install
-go run server.go
+./run-server.sh
 ```
 
 Then visit http://localhost:8081

polygerrit-ui/bower.json

@@ -1,18 +0,0 @@
-{
-  "name": "polygerrit",
-  "version": "0.0.0",
-  "description": "Gerrit UI in Polymer; DO NOT PUBLISH, used only for dependency management",
-  "private": true,
-  "dependencies": {
-    "polymer": "Polymer/polymer#1.2.2",
-    "page": "visionmedia/page.js#1.6.4",
-    "iron-ajax": "PolymerElements/iron-ajax#1.1.0",
-    "iron-input": "PolymerElements/iron-input#1.0.6",
-    "iron-a11y-keys-behavior": "PolymerElements/iron-a11y-keys-behavior#1.1.0",
-    "iron-dropdown": "PolymerElements/iron-dropdown#1.0.6"
-  },
-  "devDependencies": {
-    "web-component-tester": "*",
-    "iron-test-helpers": "PolymerElements/iron-test-helpers"
-  }
-}

polygerrit-ui/run-server.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+# Copyright (C) 2015 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -eu
+
+while [[ ! -f .buckconfig && "$PWD" != / ]]; do
+  cd ..
+done
+if [[ ! -f .buckconfig ]]; then
+  echo "$(basename "$0"): must be run from a gerrit checkout" 1>&2
+  exit 1
+fi
+
+cd polygerrit-ui
+rm -rf bower_components
+buck build //polygerrit-ui:polygerrit_components
+unzip -q ../buck-out/gen/polygerrit-ui/polygerrit_components/polygerrit_components.bower_components.zip
+exec go run server.go