Merge remote-tracking branch 'upstream/develop' into feature/performance
Removes init method in Fileboard, Gallery
Short array_merge
Merge remote-tracking branch 'upstream/develop' into feature/performance
Removes dont used use statement
Merge remote-tracking branch 'upstream/develop' into feature/performance

Conflicts:
	src/Vivo/Storage/PathBuilder/PathBuilder.php
Merge pull request #183 from miroslavhajek/feature/performance

Feature/performance
Merge pull request #185 from miroslavhajek/develop

Event manager is private
MetadataManagerFactory is in Metadata namespace