Test for escaped strings in LESS

Correct code for test
Use new version of Gonzales
Merge pull request #194 from varya/features/gonzales-3.0.0-11

Use new version of Gonzales
Fix: Styles are no longer added twice in the demo project. Fixes Firefox icon font problem
Merge pull request #195 from hannu/fix-ff-fonts

Fix: Styles are no longer added twice in the demo project. Fixes Firefox icon font problem
Add separate gulp task sass:no-fail for demo and watch mode
Log styleguide generation errors to console for now. Will handle properly later.