Simple interface fixes

[eNTi]

so i've talked a friend who was put off by the interface before he even finished the tutorial of the game and i wholeheartedly agree that the current state of the ui is a mess to put it lightly. it might have been adequate 10 years ago, but now i simply want more and there's some VERY SIMPLE things that can be done to the ui to make it much better to use.

1. Add shortcuts:
a. drag/drop stack --> whole stack
b. SHIFT + drag/drop stack --> one item from stack
c. CTRL + drag/drop stack --> ask count

2. Loot filter:
a. Right mouse button menu on item --> add/remove to filter list
b. Take all will move all items that are in the filter list to the characters inventory and drop the rest
c. Loot filter could be managed in the com panel beneath the "Ignore" list

3. Chat de-activation:
a. Enter deactivates active chat unless in RPOS mode

4. Count window interaction:
a. Enter activates "Ok" on focused window
b. ESC activates "Cancel" on focused window
c. Always on top of other windows. There's no reason why you should have any window to cover this one.

5. Character to character trade window interaction:
a. Keyboard focus in money field

6. Vendor trade window interaction:
a. Keyboard focus in count field
b. Switching to another item keeps the amount and focuses the count field, so that if you start to type the current value is overwritten
c. Clicking "Ok", checks if the character has enough room (strength) to carry all bought items