Fix misgenerated grunt task when not using a template library

```javascript
grunt.registerTask('build', [ 'jshint',<% 
  if (cssModule) { 
    %> '<%= cssModule %>',<% 
  } %><% 
  if (jsModule) { 
    %> '<%= jsModule %>',<% 
  } %><% 
  if (i18n) { 
    %> 'i18n',<% 
  } else {
    if (templateModule) { 
      %> '<%= templateModule %>',<% 
    }
  } %> 'copyto' ]);
```

(just typing this here to see if it is an improvement)