Merge pull request #518 from sergeyklay/master

Minor fixes & updates
Fixed issue: Fixed PHPDoc
Updated feature: Now Log methods can be called statically, updated PHPDoc
Fixed issue: Returned back field that is sorted
Updated feature: Mango_Collection v0.5.1

+ Fixed Mango_Collection::sortAsc
+ Cleanup Mango_Collection::sort
+ Added i18n support to MongoCursorException
Updated feature: Increased the total size of the uploaded files by default
Updated feature: Mango Reader