Fixed an issue with the welfare decree not triggering certain outcomes in famine, krakatoa and tax laws events.

Fixed AI on some decrees (genocide, penal colony, worker exploitation) so these decrees should only be usable by the player.
Vanilla events that would trigger from enlistment efforts will now also trigger for military training

Reverts ID of efficient administration decree to match vanilla road maintenance ID; should enable progression and achievements related to tutorial mode

Genocide campaign will now fire cultural homeland events

1.1
- Created proper icons for some decrees and adjusted their name to flow better when following the directive to "issue"
- Fixed several of the reworked decrees not triggering decree events
- Adjusted the values of modifiers in several decrees
- Removed +100 urbanisation from encourage manufacturing as it wasn't working anyway, replaced with +5% construction efficiency
- Integrated 'Remove Homeland Decree' to trigger events when using genocide campaign that either removes a foreign culture's homeland or adds your culture as a homeland to the state.