Tardis:Use sentence case

You may wonder why it matters, since section headers appear to be in all upper case. Well, this is just an appearance — the result of a single command in the CSS code. In other words, the headers aren't actually in upper case; they're merely styled in uppercase. Should we wish to "re-style" the wiki, it'll be important that the headers be typed by you in proper sentence case.

Another thing to consider is sectional linking, which is case-sensitive. Editors should be able to count upon the fact that headers are in sentence case so that they can reliably link to sections.

Here are some examples: