Moved licences from about to separate preference category.

<p><b>About</b> - Provides various debug information about the app and your device's camera. You can also copy

this information to the clipboard.</p>

<p><b>Privacy policy</b> - Open Camera's privacy policy.</p>

<p><b>Open Source licences</b> - Licences for files used in Open Camera.</p>

<p><b>Settings manager</b> - Select to access the following controls:</p>

<p><b>Save settings</b> - Open Camera supports saving all of its settings to a file, so that you can

UPDATED Updated some icons for newer more consistent material design look.

UPDATED Minor accessibility improvements.

UPDATED Clarify in settings that PNG image format is not truly lossless.

UPDATED Moved licences from about to separate preference category.

Version 1.47.2 (2019/09/04)

                                 Apache License

                           Version 2.0, January 2004

                        http://www.apache.org/licenses/

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        startActivity(browserIntent);

    }

    void launchOnlineLicences() {

        if( MyDebug.LOG )

            Log.d(TAG, "launchOnlineLicences");

        // if we change this, remember that any page linked to must abide by Google Play developer policies!

        Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(getOnlineHelpUrl("#licence")));

        startActivity(browserIntent);

    }

    /* Audio trigger - either loud sound, or speech recognition.

     * This performs some additional checks before taking a photo.

     */