Fix installation
PiwikPRO/plugin-SiteMigration#3
Merge pull request #6684 from piwik/installation_fix

Fix installation when privacy form submitted
refs #6686 - fixed test. reenabled test for travis
language update  refs #3430
language update  refs #3430
Merge pull request #6688 from piwik/translationupdates

[automatic translation update] Updated 35 strings in 4 languages (fr, tl, de, it)
Updating UI submodule for new Installation test [fixes #6685].
Merge branch 'master' into processed_metrics_metadata
Fixing remaining tests.