#run_script is now responsible for #activate_farm

Are there any cases where we wouldn’t want activation?
Accept argument to control how many times script is run.
Allow scripts to determine if this is the first or last run.
Add new methods & aliases for click + wait 2 seconds.
Add support for nested settings.

After setting a default environment, #click will expect an
environment-specific setting for each spot.
Implement first Nova DSL script: as_carpenters_nails

Define harvest_and_sell for multi-step and fiddly (title_bar) operation.
Use symbols to describe spots for now.