Merge pull request #1310 from rossriley/configuration-checker

Configuration checker
added default and twig variable overrides
Merge pull request #1318 from jadwigo/master

added default and twig variable overrides
Merge pull request #1315 from rossriley/configuration-checker

Configuration checker - Tests
small changes to visitors extension
added template for showvisitorsprofile
updated email and choice filed handling for use_as options
Revert "updated email and choice filed handling for use_as options"

This reverts commit eaf0312f77fae2db1ca118290eaf21e0f3f477e8.
Merge pull request #1320 from jadwigo/master

added showvisitorprofile twig function and template
fix error when status has been changed
fix to get change log configuration
Merge pull request #1322 from tonicospinelli/fix-change-status

fix error when status has been changed