Just a new miniature.

Changed "local_tribal_build_time_modifier" to "local_build_time_modifier" due to the former not being shown as percentage value (visual and immersion reasons).

1. Converting to tribe gives a small local levy and garrizon (size and reinforce rate) bonus for 20 years.

2. Destroying settlement reduces local construction time of tribal buildings for 10 years.
(FYI: cost reduction modifier for tribes doesn't work - thx PDX)

3. Small modifier icon adjustments to reflect modifiers at first glance.

Happy gaming on Valentines Day! ;)