Support multiple q's

We used to (?) support multiple q's per query (or maybe scalemt did). People are expecting us to, anyway:

> Hello,
>
> today I discovered that apertium is sending wrong response for batch interface (several q=).
> For this:
> https://www.apertium.org/apy/translate?format=html&markUnknown=no&langpair=en%7Ces&q=seconds+with&q=queries.+Memory+Usage%3A&q=8.12+MB
>
> I get:
> {"responseStatus": 200, "responseDetails": null, "responseData": {"translatedText": "8.12 MB"}}
>
> ONLY LAST PART IS TRANSLATED!!! And according to this information:
> http://wiki.apertium.org/wiki/Apertium_scalable_service
> Each part should be translated.
>
> Please fix it or inform ke does batch interface changed. Anyway please send me some info about sitiation :)
>
> Cheers
> Michał Podbielski