Add tabular.data.pageSize config option

[RandomFractals]

For paged datasets added in #60.

Default it to 100K rows per data page and provide options to change it to 1K or 10K rows per data page for datasets with over 100 columns to speed up parsing and loading datasets from machine learning domain.

[RandomFractals]

Table view with new default tabular.data.pageSize configuration setting set to 10K rows: