CB-5346 Fix and cleanup broken Android unit test

- Found stale cordova.js in the test project. Changed ant script to copy in
  a fresh one in the pre-build stage. Removed stale copies from git, added
  to .gitignore. This is what was causing the test failure when sending
  javascript to the webview.
- Found almost-stale copy of device plugin, did the same as above.
- Fixed spacing in log messages in CordovaWebView.
- Updated README.md with current information.
- Removed dollar signs that were previously accidently appended to the license.
- Added cordova version to html pages, next to the other metadata.
- Fix incorrect separator in the viewport meta tag.
- Changed old-style <log> tag to <preference name="loglevel"> in config.xml.
- In BackButtonMultiPageTest, increased the TIMEOUT so the deviceready event
  can trigger the referenced javascript, improved the setup() method to
  explicitly load the starting point.

framework/src/org/apache/cordova/CordovaWebView.java

@@ -874,7 +874,7 @@ public class CordovaWebView extends WebView {
         {
             WebHistoryItem item = currentList.getItemAtIndex(i);
             String url = item.getUrl();
-            LOG.d(TAG, "The URL at index: " + Integer.toString(i) + "is " + url );
+            LOG.d(TAG, "The URL at index: " + Integer.toString(i) + " is " + url );
         }
     }
     
@@ -888,7 +888,7 @@ public class CordovaWebView extends WebView {
 	        String url = item.getUrl();
 	        String currentUrl = this.getUrl();
 	        LOG.d(TAG, "The current URL is: " + currentUrl);
-	        LOG.d(TAG, "The URL at item 0 is:" + url);
+	        LOG.d(TAG, "The URL at item 0 is: " + url);
 	        return currentUrl.equals(url);
         }
         return false;