Allow deploy a project when the name of the Connect's customer has a &

I hade a trial customer I created, name "Ernst & Young". I copied the Studio project Imade for an initial demo, but then it was impossible to deploy, I always had this error:

```
2015-05-13 15:40:50,765 ERROR [ConnectDownloadThread-1-1] [org.nuxeo.connect.downloads.LocalDownloadingPackage] org.nuxeo.connect.update.PackageException: Failed to load package.xml descriptor for package ey-poc1-nuxeo-presales-u-0.0.0-SNAPSHOT--1518565298
2015-05-13 15:40:51,836 WARN [http-bio-0.0.0.0-8080-exec-5] [org.apache.commons.httpclient.HttpMethodBase] Going to buffer response body of large or unknown size. Using getResponseBodyAsStream instead is recommended.
2015-05-13 15:40:58,332 ERROR [ConnectDownloadThread-1-2] [org.nuxeo.connect.downloads.LocalDownloadingPackage] org.nuxeo.connect.update.PackageException: Failed to load package.xml descriptor for package ey-poc1-nuxeo-presales-u-0.0.0-SNAPSHOT-825400128
```

After digging, trying hundred things, we (thanks Fred) found the reason: When I changed the customer name to "Ernst and Young", all was good.

So, I think it should not be a problem to have such character in the name

(not sure if the problem is Studio or NXP, and the components are "Loader", "launcher" and "runtime", sorry for any mistakes I made)