Clan leveling changes

Amount of experience needed to obtain new clan level is lowered and now is as follows:

Level	Before	After
2	75 000	30 000
3	240 000	105 000
4	435 000	210 000
5	757 500	397 500
6	1 327 500	742 500
7	2 302 500	1 357 500
8	3 982 500	2 452 500
9	6 855 000	4 380 000
10	11 760 000	7 755 000
11	20 107 500	13 627 500
12	34 282 500	23 797 500

Changes come into effect after restart on September 6th, 2013