Merge branch 'pickle-unpickle' of git://github.com/gem/oq-engine into send-site-collection
Remove python-gdal from Ubuntu dependencies
Updates the website URL
Move rabbitmq-server to requirements since must configured before
oq-engine
Merge pull request #1393 from gem/remove-gdal

Remove python-gdal and fix issue with postinst
Added a SourceCollector class
Merged from master
Merge branch 'send-site-collection' of github.com:gem/oq-engine into send-site-collection
Automatic pickling-unpickling of the task arguments