The Internet Archive's "Wayback Machine" is your friend.
Go to http://archive.org
and enter the vanished page into the text box and you will shortly get a list of all the dates when they archived the page. The "*" tells you when they noticed differences in the page. Sometimes attachments like images don't get saved on one date, but do on others, so you might need to try a couple of different "identical" dates.
The first half of the documentation is how to use the calendar, the second half is CSS names and other coding display information. Cell height is not an option. Neither, is table with, I had to go in and manually set the overall table size to fit to my content width in a couple of places. Rats. I should have commented where I did that. I always forget that! I'm used to a SCL library at work, makes it easy to see where things have changed. Hmm. That would be nice to have in WB too...
As for the cell height, I forget how I did it - and I overwrote my experimental site so I have nothing to compare against. I think I went into the php code where it writes out the table's cell definition and modified it to a set height. Please post if you find the line to do that.
Start by looking at the view.php IIRC.
The one problem with the modern tendency to write everything in different files is that it makes it harder to trace and find something without an IDE and debugger.
There's actually a ton of things I like to have it do differently, easist being putting the Add Event sub-form at the TOP of the page. When you have several pages worth of dates, it gets tiresome scrolling to the bottom every time. In fact, I'd like to modify it to display "pages" so that, i.e., only the current day/week/month/quarter's events are listed.
Even better, Adding or Editing events by clicking on the description or date in the calendar itself (for logged in administrators only of course) is also a vastly better interface than forcing you to the admin page all the time. The phpeventcalendar that I mentioned before is nice & easy to use like that, although it's not under development any more either and I never quite got to integrating it with WB before this one came out anyway. The project "webcalendar" is very powerful but harder to set up from what I can tell.
There's also issues with default time entry. I'd like to set a default time other than 9 - 4. And I think it was messing it up anyway, setting end time of 4 am or something - prior to the start time. Ahem. I just haven't got fixing any of that yet. I still haven't fixed my template rendering badly with FF in fact. Sigh.