Thumbnail: fix incorrectly scaled horizontal margins

The defaults have been updated to match the margin on the time widgets.

src/Thumbnail.moon

@@ -57,8 +57,12 @@ class Thumbnail extends BarAccent
 				mp.commandv(
 					'script-message-to', 'thumbfast', 'thumb',
 					hoverTime,
-					clamp( Mouse._rawX - @thumbfast.width / 2, leftMargin, Window._rawW - @thumbfast.width - rightMargin ),
-					Window._rawH - bottomMargin*Window.osdScale - @thumbfast.height
+					clamp(
+						Mouse._rawX - @thumbfast.width / 2,
+						leftMargin * Window.osdScale,
+						Window._rawW - @thumbfast.width - (rightMargin * Window.osdScale)
+					),
+					Window._rawH - @thumbfast.height - (bottomMargin * Window.osdScale)
 				)
 
 			@needsUpdate = true

src/settings.moon

@@ -245,13 +245,13 @@ Sets whether or not thumbnails are displayed at all. Note: thumbnail display
 requires use of the thumbfast script (See: https://github.com/po5/thumbfast).
 ]]
 
-settings['thumbnail-left-margin'] = 10
+settings['thumbnail-left-margin'] = 4
 helpText['thumbnail-left-margin'] = [[
 Controls how close to the left edge of the window the thumbnail display can
 get.
 ]]
 
-settings['thumbnail-right-margin'] = 10
+settings['thumbnail-right-margin'] = 4
 helpText['thumbnail-right-margin'] = [[
 Controls how close to the right edge of the window the thumbnail display can
 get.

torque-progressbar.conf

@@ -181,11 +181,11 @@ enable-thumbnail=yes
 
 # Controls how close to the left edge of the window the thumbnail display can
 # get.
-thumbnail-left-margin=10
+thumbnail-left-margin=4
 
 # Controls how close to the right edge of the window the thumbnail display can
 # get.
-thumbnail-right-margin=10
+thumbnail-right-margin=4
 
 # Controls how far above the expanded progress bar the thumbnail display is
 # positioned.