Deleted useless .htaccess file, added missed index.html files.

This change has been already done in the 'develop' branch, but in the '2.1-stable' branch it hasn't been done yet. Since I use the '2.1-stable' branch at my work (and hope you also do), I think it may be useful to have this change here too, so that anyone who clones this branch from here wouldn't have to fix that himself/herself manually.