blanket.js wrapper added, .gitignore no longer ignores everything in test
MGC: Tests for missing expected mode and also for {{MODE}} flag (file not existing prob catches)
end-to-end tests --> GruntSetAppMode tests (in line with other names)
MGC - more helpful error message if MGC dest is not a string
MGC - unneeded validation checks in ctor removed
MGC tests - typo bug fix in test for non existent '{{MODE}}' flag in mode glob
MGCC - test for files array element without .orig set