awful.widget: Don't use a resizable imagebox

awful.widget.graph and progressbar both create an imagebox. The default is
resize = true which means the image is scaled up inside the wibox if
:set_height() is used.

Setting widget.resize = false avoids this.

Signed-off-by: Uli Schlachter <psychon@znc.in>
Signed-off-by: Julien Danjou <julien@danjou.info>

lib/awful/widget/graph.lua.in

@@ -216,6 +216,7 @@ function new(args)
 
     local graph = {}
     graph.widget = capi.widget(args)
+    graph.widget.resize = false
 
     data[graph] = { width = width, height = height, values = {}, max_value = 1 }
 

lib/awful/widget/progressbar.lua.in

@@ -169,6 +169,7 @@ function new(args)
     local pbar = {}
 
     pbar.widget = capi.widget(args)
+    pbar.widget.resize = false
 
     data[pbar] = { width = width, height = height, value = 0 }