Guild slots limit

Guild "redesign" - adding 1 additional upgrade option to level guild member slots.

lvl 1 (start) - 20 slots

lvl 2 : 25slots

- upgrade requirement from lvl1 to lvl2 :

*15000 mjp

*25000 contri

*2500 eks

*150mil gold

lvl 3 : 30 slots

- upgrade requirement from lvl2 to lvl3 :

*45000mjp

*65000contri

*5000 eks

*300mil gold

lvl 4 : 40 slots

-upgrade requirement from lvl3 to lvl4 :

*100000mjp

*130000 contri

*7500 eks

*800mil gold

1. It will be easier to maintain the balance between cities

2. It will awake market a bit, right now it is kinda hard to sell eks/contri, gold in game is worthless atm