Adds note in UI that names must match exactly

[HEdingfield]

Fixes #677.

[artoonie]

I wasn't sure what this meant until I saw the original email. I wonder if it's worth expounding a tiny bit:
Candidate names are case-sensitive and must match the CVR exactly, including any HTML tags or other formatting present in the CVR.?

SInce the real issue was not adding <B></B>, and this text doesn't quite tell me that's needed.

Also: might be nice to have a slightly smaller font? That's a lot of words that are visually equally weighted, which makes my eyes glaze over all of it and makes me less likely to read any of it.

[HEdingfield]

How's this?