[demo04] Remove unused file
Enhance inventory display
[demo04] Smarter old man speak script
[demo04] old man sells magic too now
[demo04] Use correct speak icon
[demo04] Update knight actions
[demo04] Allow knight to speak
[demo04] Fix old man speak script when player do not have gold
Fix inventory display not being darkened when inventory is empty
Add LUA function: character_set_portrait
[demo04] Change player portrait during trading with old man
Fix wrong alignement on select screen
Use mouse callbacks in select screen