Add configuration option adhocracy.auth.secret
Bump formencode to 1.2.5 to support <input type=email>
Merge branch 'develop' into hhu
Add checkversions to development buildout

Checkversions allows to quickly find updated versions of dependencies.

Example usage:

bin/checkversions -v -l 0 versions.cfg
Update Solr (3.6.1 -> 3.6.2)
Update libevent (1.4.8 -> 1.4.14b)
Merge branch 'develop' of ssh://github.com/liqd/adhocracy.buildout into develop
Merge branch 'develop' into hhu
Update lxml (2.3.6 -> 3.0.1), libxslt and libxml2
Merge branch 'develop' into hhu
Merge branch 'hhu' of https://github.com/liqd/adhocracy.buildout into autobuild
more changes