Missing static directory causes random breakage

[kentfredric]

I was cleaning up stuff in master in transitioning to statocles, and I ended up rming that directory from my source tree.

So when I switched back to the "source" branch,

coercion for "store" failed: Store path '/home/kent/perl/kentfredric.github.io-statocles/static' does not exist at /home/kent/perl5/perlbrew/perls/5.22.1-nossp-sdbm-nopmc/lib/site_perl/5.22.1/Statocles/Store.pm line 61.

I just needed to mkdir static/ again for pain to go away.

[preaction]

Yeah, I've gotten bit in different ways by this (if the theme directory doesn't exist yet, and you want to use statocles bundle theme to create it, it will fail because the theme directory doesn't exist yet), so I think I'm just going to downgrade that to a warning (#414), which are shown by default.