added about dialog on settings menu

git-svn-id: http://notifications-widget.googlecode.com/svn/trunk@104 21922344-3934-ee51-d6e3-fd981ce84c01
New feature - auto switch to compact style when collapsed

git-svn-id: http://notifications-widget.googlecode.com/svn/trunk@105 21922344-3934-ee51-d6e3-fd981ce84c01
Added ability to set small height to persistent notification

git-svn-id: http://notifications-widget.googlecode.com/svn/trunk@106 21922344-3934-ee51-d6e3-fd981ce84c01