Remaining patches#3

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frett wants to merge 22 commits intohachi:masterfrom

frett:remainingPatches

Commits on Feb 24, 2012

Commits on Feb 27, 2012

added a remove_directory command that can be used to delete empty directories
frett
committed

Commits on Nov 30, 2012

only retrieve the fid if the node exists
frett
committed

Commits on Dec 1, 2012

update the key for the updateclass cmd
frett
committed

Commits on Jan 31, 2013

Merge branches 'rmDir' and 'updateClass' into master
frett
committed

Commits on May 18, 2013