v0.1.8

Orangescrum Community Edition v0.1.8

Completes the #33 fix. 0.1.7 corrected webroot/files/.htaccess in the
repository, but webroot/files is a Docker named volume: Docker fills one
from the image only while it is empty, so no upgrade could replace the
broken copy already in an existing install, and every request under
/files/ would have gone on returning 500.

The image now keeps a pristine copy outside the mount point and the
entrypoint restores it whenever it differs.

No schema change. ASSET_RELEASE stays at 94.