[wiki]: Bringing FIRSTwiki back

[virtuald]

My goal is for the FIRST community to have somewhere to put generally useful things that aren't really in the FIRST documentation. The original FIRSTwiki tried to provide that service and fell into disrepair. This is my initiative to provide that location.

If anyone else wishes to create a parallel FIRSTwiki on a mediawiki platform, please feel free to do so. If either of our efforts succeed, then I will have met my original goal. The content on firstwiki.github.io is licensed under a free documentation license that allows you to copy the content -- and don't forget about all the content that I scraped from the original FIRSTwiki that I haven't imported yet!

I will continue operating the github FIRSTwiki site (as the level of effort to maintain it is rather close to zero), and do not wish to spend any time on alternative solutions at this time.