Merge pull request #2 from mattdebont/master

Discussed this outside of GitHub. The feeling is that this fix will work for all cases.
Changing the scale dependency
Force in grunt build is masking build errors
Changing the scale dependency
Merge branch 'feature/BetterScaleDependency' of https://github.com/NERC-CEH/nbn-imt into feature/BetterScaleDependency
Fixing tests
Merge pull request #3 from NERC-CEH/feature/BetterScaleDependency

Merging myself. Jon seems happy with this