[TxMt] [TM2] Enable deleted Bundle

[Anton Troyanov]

Wanted to test 'Disable' feature for Bundles in TM2, and after I've clicked it I couldn't Enable it back, it was grayed out.

Then I've found that in directory ~/Library/Application Support/Avian/Bundles there are Bundles that are marked as Disabled.. 
When I removed them, they became Enabled in Bundle Editor. 

That looks like workaround.

Probably bug?