Fixes #5946 - Only call fact_name_class.maximum if necessary.

fixes #5836 - Welcome page - missing rel attribute

fixes #5685 - add :path_ids to with_taxonomy_scope instead of subtree_ids for SmartProxy select dropdowns

Fixes #5645: Fixes session undefined error when user has a default taxonomy set.

fixes #5631 - API v2 - host and hostgroups show.json.rabl should show all puppetclasses in child node

fixes #5671 - LookupValue name should be matcher, value is too long

fixes #5788 - before_destroy missing from EnsureNotUsedBy.new in SmartProxy model

fixes #5726 - parameter values missing from host#show API call

Fixes #5689 - Plugin permissions are migrated too

fixes #5690 - determine host taxonomy fact based on setting value