Fix: global dnd config option has been set to be boolean:'on'\/'off' (Reported by Pavel).\nEnhancement: Added configoption->description output when running into a faulty configOption->value in the sccp.conf, to help the user.\nFix: Force reload on change of line->mailbox, so that context changes are picked up (Reported by Tammy)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5572 43c1dc8c-776e-4df2-8ef1-6e829299be21
Enhancement: global dnd config option is deprecated in favor of global dndFeature option (boolean: on/off). (Reported by Pavel).

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5573 43c1dc8c-776e-4df2-8ef1-6e829299be21