*fix* default background id 0 for panel if not specified in the config file git-svn-id: http://tint2.googlecode.com/svn/trunk@517 121b4492-b84c-0410-8b4c-0d4edfb3f3cc
*fix* default background id 0 for panel if not specified in the config file git-svn-id: http://tint2.googlecode.com/svn/trunk@517 121b4492-b84c-0410-8b4c-0d4edfb3f3cc