Ensure SpecRunner.html respects path aliases when being built.

When a path alias is defined, it is not used when building SpecRunner.html
This seems to cause problems when the imported module uses that
path alias.

The simplest fix for now is to make sure the template respects that. Logged
issue with project maintainer here:

https://github.com/jsoverson/grunt-template-jasmine-requirejs/issues/29