pub site: update dependencies and fix analyzer

app/pubspec.yaml

Index: app/pubspec.yaml
diff --git a/app/pubspec.yaml b/app/pubspec.yaml
index 42df54a0e714d0f8c692097711d3d6be98cffccb..4ca0c6fdcac01fe197b4dcae83b9caa644d475c3 100644
--- a/app/pubspec.yaml
+++ b/app/pubspec.yaml
@@ -2,22 +2,23 @@ name: pub_dartlang_org
 version: 0.1.0
 author: Dart Team
 description: The pub.dartlang.org website.
-sdk: ">=1.9.0 <2.0.0"
+sdk: ">=1.19.0 <2.0.0"
 dependencies:
+  analyzer: ^0.28.1
   appengine: '>=0.3.0 <0.4.0'
   gcloud: '>=0.3.0 <0.4.0'
   googleapis: '>=0.31.0 <0.32.0'
-  googleapis_auth: '>=0.2.2 <0.2.3'
-  html: '>=0.12.0 <0.13.0'
+  googleapis_auth: '>=0.2.2 <0.2.4'
+  html: '>=0.12.0 <0.14.0'
   http: '>=0.11.0 <0.12.0'
-  intl: '>=0.13.0 <0.14.0'
+  intl: '>=0.13.0 <0.15.0'
   logging: '>=0.9.3 <1.0.0'
   markdown: '>=0.11.0 <0.12.0'
   mustache: '>=0.2.3 <0.3.0'
   pub_semver: ">=1.2.2 <2.0.0"
   pub_server: ">=0.1.0 <0.2.0"
-  shelf: '>=0.5.6 <0.6.0'
-  uuid: ">=0.5.0 <0.5.1"
+  shelf: '>=0.5.6 <0.7.0'
+  uuid: ">=0.5.0 <0.5.4"
 
 dev_dependencies:
   unittest: ">=0.11.0 <0.12.0"