demos/risk/common directory removed (all risk demos are self-contained again)
from CRLF to LF on all demos risk files
Merge pull request #1369 from gem/demos-no-common

Remove common directory from risk demos
Reflected the change in SiteCollection.expand signature
Merge pull request #1365 from gem/removing-ruptures-1

Ruptures are not read from the database anymore, only written
Merge branch 'master' of github.com:gem/oq-engine into removing-ruptures-2