Fix Bug + Update Translation

. Balance
. Fix bugs and Text

Bug Fixed:
1. Fix 'Text infinite recursion' bug about unit(Axe Troop) ability preview in en-US
2. Balance adjustment. Policy 'Bulk commodities' from 'each bonus resource in cities +1 Gold for domestic route and +2 Gold for international route' to 'each bonus resource in cities +2 Gold for city's route'
3. Add Tanditional-Chinese version support (Hant_HK)
4. Other.

Bug Fixed:
1. Policy 'material trade' & 'bulk commodities' do not work properly
2. The third ability of leader leon does not work (run without any error or warning, so ignored it, now fixed.)
3. Fix Moment picture. Make these from 320*240 -> 460*345(maybe the most proper size which game use, i can not get the image file actually, so this size just is an estimate.)
4. Other.

private -> public