optimize content-packs related pages

res/layouts/pages/content.xml.lua

@@ -99,8 +99,14 @@ function refresh()
         end
     end
 
+    local packids = {unpack(packs_installed)}
+    for i,k in ipairs(packs_available) do
+        table.insert(packids, k)
+    end
+    local packinfos = pack.get_info(packids)
+
     for i,id in ipairs(packs_installed) do
-        local packinfo = pack.get_info(id)
+        local packinfo = packinfos[id]
         packinfo.index = i
         callback = not table.has(base_packs, id) and string.format('move_pack("%s")', id) or nil
         packinfo.error = check_dependencies(packinfo)
@@ -108,7 +114,7 @@ function refresh()
     end
 
     for i,id in ipairs(packs_available) do
-        local packinfo = pack.get_info(id)
+        local packinfo = packinfos[id]
         packinfo.index = i
         callback = string.format('move_pack("%s")', id)
         packinfo.error = check_dependencies(packinfo)

res/layouts/pages/content_menu.xml.lua

@@ -247,8 +247,9 @@ function refresh()
     local contents = document.contents
     contents:clear()
 
+    local packinfos = pack.get_info(packs_installed)
     for i, id in ipairs(packs_installed) do
-        local packinfo = pack.get_info(id)
+        local packinfo = packinfos[id]
 
         packinfo.id = id
         packs_installed[i] = {packinfo.id, packinfo.title}