Pages with 500+ selectable items in a single able can suffer from poor performance

[cigamit]

Describe the bug
The table rows and checkbox selectors have poor performance for very large tables due to the use of anonymous functions which delay the rendering on very large tables.

To Reproduce
Steps to reproduce the behavior:

1. Goto a page that has several thousand rows, like Data Sources or Graphs
2. Press the Go Button
3. Modify the URL and change rows=XXX to rows=10000 and press enter to load the URL
4. Notice the load time and JavaScript warnings on the page related to a hung script

Expected behavior
Though expected to be slower due to the number of rows, it should not hang the page.

Additional context
Eventually, with continued refinement of the JavaScript behavior, we should be able to increase the maximum rows on a page beyond 500.

[cigamit]

Happily resolved.