custom series queryvar for stopping conflicts with other plugins/themes using "series".
[touch: 139]
whoops SERIES_QUERY_VAR used instead of what it should be SERIES_QUERYVAR
[touch: 139]
query_var should be TRUE :)
Merge branch 'refs/heads/development' into FET-test-work-on-custom-queryarg

Conflicts:
	orgSeries.php
define SERIES_QUERYVAR later so that it uses whatever is set as the custom base set in options for the queryvar when not using permalinks
[touch: 139]
fixes a spot where the proper query_var wasn't used
[touch: 139]