CP-9126:Add interface to export Resource Statistic Report as CSV format.

Signed-off-by: Cheng Zhang <cheng.zhang@citrix.com>
Merge branch 'xs64bit' of https://github.com/xs-nanjing/xenadmin into xs64bit

Conflicts:
	XenAdmin/Actions/GUIActions/ExportStaticReportAction.cs

Signed-off-by: Cheng Zhang <cheng.zhang@citrix.com>