update for spaces/special characters

[bridgetkromhout]

As far as I can tell, I've removed "displayname" from being needed at all - I came to the opposite conclusion from what @mattstratton was saying in #861, after digging into this. People can now just set "City" as desired, and the new event script will handle it. The few places I was parsing the city value, I'm now parsing "name" to get the city slug.

It didn't turn out to be necessary to put the city slug in the data file. When updating the new event script as requested in #860, I kept it simple and parsed the entered name instead of asking the user for multiple variations.

I also think I can probably remove "friendly" as a data file element from the sample data file; it's not used, although in one place a variable is also called that.

I'm leaving "current" in the data file for now until it's totally gone and #882 is resolved.

[mattstratton]

Makes a lot of sense to me.

future.html needs a tweak for this too I think. It has similar conditionals on displayname (although that's just hygiene; sun setting that parameter won't break the code)

[bridgetkromhout]

future.html needs a tweak for this too I think. It has similar conditionals on displayname (although that's just hygiene; sun setting that parameter won't break the code)

Yeah, I know - I was just too tired to resolve the merge conflict last night. :)

[bridgetkromhout]

When merged:

Fixes #860
Fixes #858
Fixes #861
Fixes #169
Fixes #922