Switch from LaunchPad to GitHub.  And other changes to facilitate that.
 -  ipoerpMakeOerpServerConfigFile.sh, ipoerpSituateOpenErpSourceCode.sh, ipoerpUpdateOpenErpSourceCode.sh
      Switch from LaunchPad to GitHub
 -  MountParameters.sh.example, ipoerpInitializeDevice.sh
      Add disk partitioning percentage variable
 -  WipeClean.sh
      Handle "device busy" better.  Works quieter.
 -  ipoerpPrepareDatabase.sh
      Hide scary FIXME message

Changes to be committed:
	modified:   ipoerpMakeOerpServerConfigFile.sh
	modified:   ipoerpSituateOpenErpSourceCode.sh
	modified:   ipoerpUpdateOpenErpSourceCode.sh
	modified:   MountParameters.sh.example
	modified:   ipoerpInitializeDevice.sh
	modified:   WipeClean.sh
	modified:   ipoerpPrepareDatabase.sh