Misc. code cleanup.
Merge branch 'master' of https://github.com/aetherith/cs4414
Merge branch 'master' of https://github.com/aetherith/cs4414
Merge branch 'master' of https://github.com/aetherith/cs4414
Merge branch 'master' of https://github.com/aetherith/cs4414
Merge branch 'master' of https://github.com/aetherith/cs4414
Added used data blocks check.  Integrating file extension change and file move now.
Merge branch 'master' of https://github.com/aetherith/cs4414