Gruntfile.js: have to turn off mangling when uglifying the JS for AngularJS
Gruntfile.js: have to turn off mangling when uglifying the JS for AngularJS

We might be able to get away with a bit of mangling, and there are options
to tune what's transformed, but this seems to work so let's go with it.

WorldWideTelescope/wwt-web-client,WorldWideTelescope/wwt-web-client