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.
CB-5349: fixed regression in update script
This should use plugman to install plugins.  Adding path depenencies for plugins is wrong, and shouldn't be done
Removing the plugins directory after the plugins were incorrectly removed
Removing device plugin
Fixing plugins configuration, Device shouldn't be checked in here
Updating instructions to indicate that the device plugin is required to be installed via plugman
CB-5346: delete a stale file that isn't needed
CB-5346: remove dependency on device plugin

- remove dependency on the device plugin in the js and html
- clean out dollar signs chars that were accidently appended to the license
- fix punctuation in the viewport value
Remove Application settings from framework/AndroidManifest.xml

They aren't needed since framework is a library.
CB-5232 Change create script to use Cordova as a library.
CB-5255: Checking in the Google Check, TODO: Add Amazon FireOS check
Add javadoc comments to source classes
CB-5471: add deprecation javadoc/annotation
CB-5490: add javadoc target to ant script

- add javadoc target to ant script. It must be invoked explicitly to run.
- ignore the generated javadoc html directories.
- clean up javadoc errors in source files.
- upon invoking 'clean' target, erase generated jar and javadoc
Thanks for Benn Mapes for making this process easy.  Updating the Android API level.
CB-5422: Don't require JAVA_HOME to be defined

JAVA_HOME is not necessarily defined on Linux and Mac.
Print out the value of JAVA_HOME in the error message
in case "java -version" fails.
Moving the console.log out of run() method

Since cordova-cli calls the check_req library run() method, we do not
want to always console.log on success in there (not usually a useful side
effect).
Updated CordovaWebView to experiment with onScrollChanged messages
CB-5445: Adding onScrollChanged and the ScrollEvent object