Added test to reproduce #449.
Recreated SlugHandler
Added additional slug handler tests
Support Reordering the Whole Tree

-Allow reorder() to take a null $node, such that root nodes can be reordered too. Before, if a root node was provided, it's children and their siblings would be reordered, but the root node and its sibling's wouldn't be rearranged.
-Add a reorderAll() convenience method.
[README] add uploadable
Merge pull request #489 from dbu/patch-2

[README] add uploadable
Fix grammar and spelling
Merge pull request #491 from jsjohns/patch-2

Fix grammar and spelling
Fixed issue #481

NestedTree Repository persistAs[...]Sibling: set correct parent
Moved one line
Removed PHPStorm File
Merge branch 'issue_481' into treeslughandler
Removed unnecessary call
Merge branch 'issue_481' into treeslughandler
Added test for issue #351
Merge pull request #492 from cevou/issue_481

Fix for issue 486
SoftDeleteable: filter add enable / disable support for entity with inheritance
Recreated SlugHandler
Added additional slug handler tests
Removed PHPStorm File