Macros - bugfix parameters
Core.Resolution - fix concurrency issues

Conflicts:
	src/Umbraco.Core/ObjectResolution/Resolution.cs
Core.Resolution - umbraco.cms.Action should NOT reset resolution
Core.EnumerableExtensions - refactor InGroupsOf to enumerate source only once
Core.StringExtensions - switch over to the new DefaultShortStringHelper
Merge remote-tracking branch 'origin/6.2.0' into 7.0.0

Conflicts:
	src/Umbraco.Core/ObjectResolution/Resolution.cs