Fixed a bug with scrolling offset on the config screen

diff --git a/NinjaPanel.lua b/NinjaPanel.lua
index 01c56f3..a1f5772 100644
--- a/NinjaPanel.lua
+++ b/NinjaPanel.lua
@@ -767,7 +767,7 @@ frame:SetScript("OnShow", function(frame)
 				local entry = NinjaPanel.plugins[name]
 				local opts = NinjaPanelDB.plugins[name]
 				local enabled = not opts.disabled
-				local color = statusColors[enabled]
+				local color = statusColors[enabled or false]

 				row.check:SetChecked(enabled)
 				row.title:SetText(name)
@@ -796,7 +796,7 @@ frame:SetScript("OnShow", function(frame)

 	local f = scrollbar:GetScript("OnValueChanged")
 	scrollbar:SetScript("OnValueChanged", function(self, value, ...)
-		offset = value
+		offset = math.floor(value)
 		Refresh()
 		return f(self, value, ...)
 	end)