Remove CIF, HVGA and XGA from default list of supported resolutions

[sarxos]

In addition to avoid problems reported in #94, the default list of supported resolutions should be reduced to absolute minimum. The CIF, HVGA and XGA resolutions are not supported by all the webcam devices and therefore shall not be included on that list. To support these resolutions one has to register them first.

webcam.setCustomViewSizes(new Dimension[] {
  WebcamResolution.CIF.getSize(),
  WebcamResolution.HVGA.getSize(),
  // etc
});
webcam.setViewSize(WebcamResolution.HVGA.getSize());