Addpage now accepts relative pagenames

'addpage page_tpl page_tgt' now accepts relative pages too eg. .:ns:page ([splitbrain / dokuwiki-plugin-bureaucracy Issue #45])
Please note that I have not changed how templates are accessed.

Relative namespaces can be configured by prefixing with dot and colon, so:
addpage wiki:templates:project: .:project
But this will fail: 
action template wiki:templates:project: .project