include a "#" column on candidate and CVR list

[artoonie]

closes #674

Done for both the candidate and CVR list
Adapted from this code: https://stackoverflow.com/a/41282740/1057105 (do we want to include a reference to s/o in the code?)

[yezr]

Yes, let's also add to the candidate list.

[tarheel]

I'm a bit confused by startNumber. It looks like you always pass 1 for this arg and you never change the value. But there must be something in the interface that modifies this value...?

Adapted from this code: https://stackoverflow.com/a/41282740/1057105 (do we want to include a reference to s/o in the code?)

Might as well.

[artoonie]

startNumber is basically there to swap between 0-index and 1-index, in case we want a table with 0-indexing in the future -- it could also be used to have a partially-loaded table, e.g. if we decide to list all CVRs in the GUI and dynamically load just a segment.

(It came free from s/o so I opted to not delete it.)