Remove one too many closing bracket on L1250

There was one too many closing bracket in orm/model/nestedset.php on line 1250 that broke code.
Merge pull request #292 from philipptempel/patch-1

Remove one too many closing bracket on L1250
remove trailing slash from path, closes #286
Merge branch '1.7/develop' into fix/to_array

Imports one-too-many closing bracket