Incorrect display in the character sheet

[ghostbuster]

When you display the 'C'haracter sheet, change item/talent/stats, and redisplay the C sheet, the difference between the previous value is shown. It is very handy, but presently this diff information is incorrect in some situations :

1/ weapon damage
Only the impact of the dam bonus (+str, +phys power) appears if you change weapon.
- If you have weapons with different base power, but the same dam bonus, no difference will appear.
- If you have a weapon A with a large base power that gives, say 60 damage, and you switch to weapons B with a much smaller base power, but some to_dam bonus, you can have a display like
damage: 50 (+5)
instead of
damage: 50 (-10)

2/ damage mods
When there are modifications in the 'all' damage and a specific damage, the diff display is incorrect.
For instance, if you have +60% fire damage, and that you change from an item that gives +10 fire damage to an item that gives +9% all damage, the display for the fire damage mod will be
fire : 59% (-10%)
instead of
fire : 59% (-1%)

3/ Resistances
Absolutely no diff information is given for the resistances.

4/ Effect resistance
Less important, but could be improved.
If you lose an immunity, it is just no longer displayed, while it would be better to have
stun : 0% (-20%)
(actually this is properly displayed like that if your immunity becomes negative)

5/ Not very important, but I would suggest to rename in the display sheet the 'all' damage to 'others' or 'other damages'. It would be clearer that the given damage/resist information already includes the 'all' bonus.