Build 4.4.0.0512
Fixed issue: “SlidingExpiration”必须大于等于“00:00:00”且小于等于“365.00:00:00”。
#269
merge #267 fix error in admin Ajax login function
Merge #266 Add allow-cross domain post switch
Merged #263 Azure startup task
Merge branch 'master' into new_milestone

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