Updated Recess to 1.1.7

Recess 1.1.7 fixed an issue in Recess' dependency having LESS 1.4 beta (that is for Recess 1.1.6) and this resulted in errors:

```
Running "recess:dev" (recess) task
>> TypeError: Cannot call method 'map' of undefined
Warning:  Use --force to continue.
```
More information here: https://github.com/twitter/recess/pull/97