Do not render defaults in paging links

Right now, we always render page size and page number in first/last/prev/next links, even if they match the default. For example, assuming a default page size of 10, we could render:
```
https://api.domain.com/users?fields=title
```
instead of:
```
https://api.domain.com/users?fields=title&page[size]=10&page[number]=1
```

