Cleaning up source.android.com files.

This change fixes some formatting artifacts that resulted from the export from
Sites, and also updates links to no longer point to Sites and use the standard
{@docRoot} idiom. Also contains a few content updates, and introduces a page
about branch management.
diff --git a/pdk/docs/source/building-dream.jd b/pdk/docs/source/building-dream.jd
index 71b4f58..f5472ce 100644
--- a/pdk/docs/source/building-dream.jd
+++ b/pdk/docs/source/building-dream.jd
@@ -1,9 +1,12 @@
-page.title=Android Compatibility - Compatibility Test Suite
+page.title=Building for ADP1
 doc.type=source
 @jd:body
-<h3><b>Building For Dream</b>
-</h3>
-<div>The basic manifest for cupcake (and above) defines which projects are needed to do a generic build for the emulator or for unlocked Dream devices (e.g. the Android Dev Phone 1). You need to have an appropriate device running a matching official image.<br><br>To build donut or master for dream (your device needs to be an ADP1 running an official 1.6 system):<br><ol><li>Follow the<a href="http://source.android.com/download">normal steps</a>
+<div>The basic manifest for cupcake (and above) defines which projects are
+needed to do a generic build for the emulator or for unlocked Dream devices
+(e.g. the Android Dev Phone 1). You need to have an appropriate device running
+a matching official image.<br><br>To build donut or master for dream (your
+device needs to be an ADP1 running an official 1.6 system):<br><ol><li>Follow
+the <a href="{@docRoot}source/download.html">normal steps</a>
 to setup repo and check out the sources.
 </li>
 <li>At the root of your source tree, run ". build/envsetup.sh" like you normally would for an emulator build.
@@ -17,7 +20,7 @@
 </li>
 <li>from this point, the fastboot tool (which is put automatically in your path) can be used to flash a device: boot the device into the bootloader by holding the back key while pressing the power key, and run "fastboot -w flashall".<br></li>
 </ol>
-To build cupcake for dream (your device needs to be an ADP1 running an official 1.5 system):<br><ol><li>Follow the<a href="http://source.android.com/download">normal steps</a>
+To build cupcake for dream (your device needs to be an ADP1 running an official 1.5 system):<br><ol><li>Follow the <a href="{@docRoot}source/download.html">normal steps</a>
 to setup repo and check out the sources.
 </li>
 <li>At the root of your source tree, run ". build/envsetup.sh" like you normally would for an emulator build.