[Featue request] Select all in the production lines by default

[houghi]

Standard the default should be to have all the production lines selected. This becomes important if you have many lines and you add one ore more new ones. Now it is very easy to forget to select them all and loose any new additions. I am sure that most people will want to save everything, but only in specific cases, do NOT want to do that.

[greeny]

As mentioned on reddit - not really possible without assuming user's intentions. On the top of the tab it tells you how many you have selected.