Add limit and offset template parameter

Enables subsequent template queries to use `smw-resultquerylimit` and `smw-resultqueryoffset` in order to apply the same conditions as the source query allowing to display correct conditional results. 

```
{{#ask: {{{smw-resultquerycondition|}}}
|limit= {{{smw-resultquerylimit|}}}
|offset= {{{smw-resultqueryoffset|}}}
|format=sum
|?Population
}}
```