Fix tab not clearing window when redrawing

orders.lua

@@ -32,6 +32,7 @@ end
 
 
 local function displayTab(self)
+    self.window.clear()
     local tw,th = self.window.getSize()
     for i, val in pairs(orders) do
         local line_num = (i-self.scrollPos)*2+1

requests.lua

@@ -47,6 +47,7 @@ local function fetch(wait_for)
 end
 
 local function displayTab(self)
+    self.window.clear()
     local tw,th = self.window.getSize()
     display_list = {}
     for i, val in pairs(requests) do