Update CHANGELOG.md

Fix typos
Create indenpendant temp dir for each Behat run
Use a specific temp dir for behat instead of changing system
Update platform ref
Licence name coherent with community-standard
Customized behat tmp dir
Use Homogeneous csv serializer for classic entities
Merge branch 'master' into behat-custom-tmp-dir
Merge pull request #650 from akeneo/behat-custom-tmp-dir

Customized behat tmp dir
Fixed UI for custom entity quick create
Merge branch 'master' into oro/grid