Report Pagination

[jdorn]

Add 'paginate=#' to OPTIONS header where # is the number of rows per page.

Ability to pass limit and offset into reports in query string.

Cache full report result when limit is specified in query string. When using async html template, generate a random cache key to pass into the async report. The report will store full rows using this cache key.

Paginate links will refresh the table part of the report only, also passing in the generated cache key.

Need new 'table' report type that only displays html table of rows with a "Showing rows X to Y of Z" message at the top.

When pulling rows from cache, don't store report generation time.

[jdorn]

Not implementing for now. Easy to add later now that we are using the DataTables plugin.