removed isProject function from utils, and imported cordova-lib cordova utils

cordova utils is not exposed as a module
referenced module.exports to find isProject function. No good reason to do this.
determine project by calling isCordova from cordova-lib
fixed tests to expect cordova util isCordova calls
reference correct path for config.xml
updated tests to handle use of fs.rename
Merge branch 'dingus'

for milestone 7