Handle project descriptions ending in "."

[DrivebyCoding]

Projects with description ending in "." results in filenames ending in "." which is not legal on Windows

[DrivebyCoding]

Had the exporter trying to write file "... rsion..f3d\Bedroom lamp fix. Used version.". This patch strips all trailing "."s.

[Jnesselr]

Okay, SO! This is gonna get a little weird to handle some of these file issues. It's very possible to have a name like Test*.

The regex replacement makes it look like Test ., and you stripping off the period at the end turns it into Test which is invalid because it has a space at the end. Similarly, Test.stp. would turn into Test.stp and the code above it that handles components with filename extensions would fail. Granted, that one is less of a common case probably but... Not gonna lie, getting pretty paranoid about the number of ways a file name can be invalid. If only Autodesk made a way we could unit test this crap. (I could probably figure it out, but do I hate myself that much, no, no I don't)

Luckily, we replace anything that's not a-z, A-Z, 0-9, spaces, newlines (wait should that one be there), and periods with a space. Which means we can follow that up with a cute lil regex that just replaces any spaces/periods/newlines at the beginning and end and replaces it with a space and then call a single strip at the end of all that.

Does that make sense at all? I'm definitely typing this idea out by the seat of my pants so....