SDK doc change: Add "fetch by http" workaround for connection problems in SDK Manager.

<p>Any SDK components available from the site will now be listed under

<strong>Available Components</strong>.</p>

<h3 id="troubleshooting">Troubleshooting</h3>

<p><strong>Problems connecting to the SDK repository</strong></p>

<p>If you are using the SDK and AVD Manager to download components and are encountering

connection problems, try connecting over http, rather than https. To switch the

protocol used by the SDK and AVD Manager, follow these steps: </p>

<ol>

  <li>With the Android SDK and AVD Manager window open, select "Settings" in the

  left pane. </li>

  <li>On the right, in the "Misc" section, check the checkbox labeled "Force

  https://... sources to be fetched using http://..." </li>

  <li>Click <strong>Save &amp; Apply</strong>.</li>

</ol>

<h2 id="dependencies">SDK Component Dependencies</h2>

<p>Additionally, the development tools will notify you with debug warnings

if there is dependency that you need to address. </p>