Fix some issues with backdrops

diff --git a/PerfectRaid.lua b/PerfectRaid.lua
index 2138b82..9a17e7c 100644
--- a/PerfectRaid.lua
+++ b/PerfectRaid.lua
@@ -183,7 +183,7 @@ end
 function PerfectRaid:CreateRaidFrame(idx)
 	local options = self.db.profile.headers[idx]
 	local name = "PRHeader"..idx
-	local template = "SecureGroupHeaderTemplate"
+	local template = "SecureGroupHeaderTemplate,BackdropTemplate"

 	local frame = getglobal(name)

@@ -232,7 +232,7 @@ function PerfectRaid:CreateRaidFrame(idx)

 	frame:SetAttribute("point", options.alignbottom and "BOTTOM" or "TOP")
 	frame:SetAttribute("groupFilter", options.filter or "")
-	frame:SetAttribute("template", "SecureUnitButtonTemplate")
+	frame:SetAttribute("template", "SecureUnitButtonTemplate,BackdropTemplate")
 	frame:SetAttribute("templateType", "Button")
 	frame:SetAttribute("yOffset", yoffset)
 	frame:SetAttribute("sortMethod", options.sortType)
diff --git a/PerfectRaid.toc b/PerfectRaid.toc
index 1a23969..04ef8ce 100644
--- a/PerfectRaid.toc
+++ b/PerfectRaid.toc
@@ -1,4 +1,4 @@
-## Interface: 80000
+## Interface: 90001
 ## Title: PerfectRaid
 ## Version: @project-version@
 ## Author: Cladhaire
diff --git a/PerfectRaid.xml b/PerfectRaid.xml
index 1102784..c7d131f 100644
--- a/PerfectRaid.xml
+++ b/PerfectRaid.xml
@@ -1,6 +1,6 @@
 <Ui xmlns="http://www.blizzard.com/wow/ui/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.blizzard.com/wow/ui/
 ..\FrameXML\UI.xsd">
-	<Frame name="PROptionsTemplate" movable="true" frameStrata="DIALOG" toplevel="true" hidden="true" parent="UIParent" virtual="true">
+	<Frame name="PROptionsTemplate" inherits="BackdropTemplate" movable="true" frameStrata="DIALOG" toplevel="true" hidden="true" parent="UIParent" virtual="true">
 		<Size>
 			<AbsDimension x="500" y="400"/>
 		</Size>
@@ -76,7 +76,7 @@
 				self.Title = getglobal(name.."Title")
 			</OnLoad>
 			<OnHide>
-				PlaySound("UChatScrollButton");
+				PlaySound(SOUNDKIT.IG_MAINMENU_OPTION_CHECKBOX_ON);
 			</OnHide>
 		</Scripts>
 	</Frame>