Update bankscreen.simba

TRSBankScreen.isTabActive() was returning wrong results:
_COLOR_BANK_TAB_ACTIVE = 4407350: http://puu.sh/7Wn4c.png 
is color at the bottom of inactive tabs
Merge pull request #103 from riwu/patch-1

fix TRSBankScreen.isTabActive()
7 April bank interface update
Update bankscreen.simba

in case there's an item of same color in bank
Merge pull request #104 from riwu/patch-2

7 April bank interface update
More robust bankscreen.__find().
getPackSlotBox() fix

diffX&Y have increased
Merge pull request #105 from riwu/patch-3

getPackSlotBox() fix
More tolerance.
Merge branch 'master' of https://github.com/SRL/SRL-6
Better bankscreen detection, also fully dynamic.
Fix bankScreen.quickDeposit, add bankScreen.clickButton().
Update bankscreen.__find().