Read sdk vars from centralized files. Fix a couple of issues in navigation labels and alignment.

Change-Id: I71da51cd20ac68ad6bc82cf8d9507cda965ec88b
diff --git a/tools/droiddoc/templates-sdk-dev/sdkpage.cs b/tools/droiddoc/templates-sdk-dev/sdkpage.cs
index a336521..94b6276 100644
--- a/tools/droiddoc/templates-sdk-dev/sdkpage.cs
+++ b/tools/droiddoc/templates-sdk-dev/sdkpage.cs
@@ -1,5 +1,6 @@
 <?cs include:"doctype.cs" ?>
 <?cs include:"macros.cs" ?>
+<?cs include:"../../../../frameworks/base/docs/html/sdk/sdk_vars.cs" ?>
 <html<?cs if:devsite ?> devsite<?cs /if ?>>
 <?cs if:sdk.redirect ?>
   <head>