sdk doc change for esr: Add "resources" tab content. Fix links pointing to the old locations. Change Android.mk to output samples files to resources/samples. Misc other fixes.

Bug: 2160782
Change-Id: Ib1eb2e9e3fe3a7b2ad16387dbf888646a1195221
diff --git a/docs/html/sdk/index.jd b/docs/html/sdk/index.jd
index 6ca02b6..209a67b 100644
--- a/docs/html/sdk/index.jd
+++ b/docs/html/sdk/index.jd
@@ -84,6 +84,6 @@
 project or move existing applications into the new SDK.</p>
 
 <p>If you are new to Android, you can use the <a
-href="{@docRoot}guide/tutorials/hello-world.html">Hello World</a> tutorial to
+href="{@docRoot}resources/tutorials/hello-world.html">Hello World</a> tutorial to
 get started quickly. <a href="{@docRoot}sdk/installing.html#NextSteps">Next
 Steps</a> offers other suggestions of how to begin. Welcome!</p>