Fix issue with initial items per page

Items per page were quantized by default because `quantize` was called on
`pageReload` event, even though this should be only applied if `auto-presets`
property were set to `true`, causing a mismatch with expected number of values
initially loaded.
Dump assets
Add tests for pagination on page load
Merge pull request #53 from seegno/bugfix/item-quantization

Fix issue with initial items per page