Revert " reverting call-for-presentation changes"
Revert " reverting call-for-presentation changes"

This reverts commit d2f0661ff0ea9d687d7da5e470ac471f6de8f244.

AvidGeo/foss4g2017-dev,artardif/foss4g2017-dev,AvidGeo/foss4g2017,AvidGeo/foss4g2017-dev,artardif/foss4g2017-dev,AvidGeo/foss4g2017,AvidGeo/foss4g2017,artardif/foss4g2017-dev,AvidGeo/foss4g2017-dev