Add package title to ContentDB error messages (minetest#12705)

builtin/mainmenu/dlg_contentstore.lua

@@ -89,7 +89,7 @@ local function download_and_extract(param)
  if filename == "" or not core.download_file(param.url, filename) then
  core.log("error", "Downloading " .. dump(param.url) .. " failed")
  return {
- msg = fgettext("Failed to download $1", package.name)
+ msg = fgettext("Failed to download \"$1\"", package.title)
  }
  end
 
@@ -105,7 +105,7 @@ local function download_and_extract(param)
  os.remove(filename)
  if not tempfolder then
  return {
- msg = fgettext("Install: Unsupported file type or broken archive"),
+ msg = fgettext("Failed to extract \"$1\" (unsupported file type or broken archive)", package.title),
  }
  end
 
@@ -129,7 +129,7 @@ local function start_install(package, reason)
  local path, msg = pkgmgr.install_dir(package.type, result.path, package.name, package.path)
  core.delete_dir(result.path)
  if not path then
- gamedata.errormessage = msg
+ gamedata.errormessage = fgettext("Error installing \"$1\": $2", package.title, msg)
  else
  core.log("action", "Installed package to " .. path)