Fixer should not be added when using custom template transformation without sourcemaps

[undsoft]

This relates to me trying to use pug with codelyzer here:
#880

The problem is that I don't have sourcemaps.
When I use tslint --fix, any template rules that have a fixer (I've just tried angular-whitespace) will update the code incorrectly.

I think it would be best if codelyzer didn't attempt to add a fix, if a custom transformTemplate function is used and no sourcemap is provided.

[rafaelss95]

@undsoft I don't use pug, but angular-whitespace is deprecated and it as far I can remember, it has some problems with its fixer. We have just another template rule that has a fixer, the template-banana-in-box. Would you mind to try to reproduce the problem with it?