add fork_project command
fork fixes for upstream pull

Change-Id: Ia48a93ccbfea6fdc0791ce25cf3e6291bfe7fa08
more fixes for pull reuest

Change-Id: I1b3d64d79187c414e326928a96427d1cc6176224
additional fork check and enhanced tests
bug fix for namespaced project forking
improve tests for forking from namespaces

Change-Id: I0c343c03ee3f033641f9958030ac57d92296547d
Merge pull request #45 from amacarthur/fork-feature

add fork_project command