1°) the supreme sorceress can now take 100 points in magical item
(issue https://github.com/BSData/whfb/issues/74)

2°) The supreme sorceress is not required to have a wizard level 3 when
taking a wizard level 4 (first part of issue
https://github.com/BSData/whfb/issues/72)

3°) The dark steed mount cost for a sorceress has been decreased to 10
points (down from 20 points), see issue
https://github.com/BSData/whfb/issues/85
Merge pull request #87 from BSDataAnon/DarkElves8thBRB8thAB_141016080537312

Fixes the 3 issues detailed. (#72, #74, #85)