Fixed 0 absolute expiration caching bug. "new DateTimeOffset(DateTime.MaxValue) will fail on any computer with a timezone that is behind UTC (negative offset)."
Build 4.4.0.515
Commit user is empty in html block inline editing.
Fixed exit inline edit button issue.
Fixed jqueryUI date picker styles issue on inline editing.
Merge branch 'master' into new_milestone

Conflicts:
	Kooboo.CMS/CMSAssemblyInfoGlobal.cs
	Kooboo.CMS/Publish/Default/Properties/AssemblyInfo.cs
Merge branch 'new_milestone' of https://github.com/Kooboo/CMS into new_milestone

Conflicts:
	Kooboo.CMS/CMSAssemblyInfoGlobal.cs
	Kooboo.CMS/Publish/Default/Properties/AssemblyInfo.cs