dev-manual: Edits to "Yocto Project Source Repositories" section.

Some minor text editing.  Also, updated two figures to be
more recent.  One for the Index of Releases and one for the
YP Downloads page from the website.  They were very dated.

(From yocto-docs rev: 59255d7c0175a5280239d070ce902079229cf909)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/dev-manual/dev-manual-newbie.xml

@@ -412,7 +412,7 @@
         This web-based source code browser is organized into categories by function such as
         IDE Plugins, Matchbox, Poky, Yocto Linux Kernel, and so forth.
         From the interface, you can click on any particular item in the "Name" column and
-        see the URL at the bottom of the page that you need to set up a Git repository for
+        see the URL at the bottom of the page that you need to clone a Git repository for
         that particular item.
         Having a local Git repository of the Source Directory (poky) allows you to
         make changes, contribute to the history, and ultimately enhance the Yocto Project's
@@ -428,9 +428,9 @@
     </para>
 
     <para>
-        For any supported release of Yocto Project, you can go to the Yocto Project website’s
-        <ulink url='&YOCTO_HOME_URL;/download'>download page</ulink> and get a
-        tarball of the release.
+        For any supported release of Yocto Project, you can go to the 
+        <ulink url='&YOCTO_HOME_URL;'>Yocto Project Website</ulink> and 
+        select the "Downloads" tab and get a tarball of the release.
         You can also go to this site to download any supported BSP tarballs.
         Unpacking the tarball gives you a hierarchical Source Directory that lets you develop
         using the Yocto Project.
@@ -459,10 +459,13 @@
                 Downloading and extracting these files does not produce a local copy of the
                 Git repository but rather a snapshot of a particular release or image.</para>
                 <para>
-                <imagedata fileref="figures/index-downloads.png" align="center" width="6in" depth="4in" />
+                <imagedata fileref="figures/index-downloads.png" align="center" width="6in" depth="3.5in" />
                 </para></listitem>
-            <listitem><para><emphasis><ulink url='&YOCTO_HOME_URL;/download'>Yocto Project Download Page</ulink></emphasis>
-                This page on the Yocto Project website allows you to download any Yocto Project
+            <listitem><para><emphasis>"Downloads" page for the 
+                <ulink url='&YOCTO_HOME_URL;'>Yocto Project Website</ulink>:</emphasis>
+                Access this page by going to the website and then selecting
+                the "Downloads" tab.
+                This page allows you to download any Yocto Project
                 release or Board Support Package (BSP) in tarball form.
                 The tarballs are similar to those found in the
                 <ulink url='&YOCTO_DL_URL;/releases/'>Index of /releases:</ulink> area.</para>