#109 Create new preference page "Personalization"

[Franz Zieris]

The new preference page should combine the settings concerning the balloon notifications, auditory notifications, and colors. See this picture for an overview of the necessary changes: https://www.dropbox.com/s/urp1cl8pl2kkk8r/saros-preferences-personalization01.png

The new page should supersede the "Appearance" page, and it may look like this: https://www.dropbox.com/s/5lpb1j0cvy46wg7/saros-preferences-personalization02.png

[Stefan Rossbach]

516e5d7eb533fd9581a24193edc814c7f94179f1

cd19883d6f5f633a82942129ab0a3aa1580231da