Crazy house 2F: fix "compare number with nil" in counter 36 (fix #3).
Dungeon 2 1F: fix an enemy not counting in WFT room (Fix #4).
Merge branch 'v1.6'

Conflicts:
	ChangeLog
Upgrade resource list file project_db.dat to Solarus 1.1.
Rename zsdx to zsxd in icon file names.
Update scripts to the new map:get_entities().
Replace fade_in/out callbacks in menus by timers.
Update scripts to the new dialog API.
Make the pause menu belong to the map instead of the game.
Update HUD code to the new dialog API.
Remove useless instruction.
Fix timer bugs in the scripted dialog box.
Set a range of allowed quest sizes.
Make HUD icons semi-transparent if hero near the camera top-left corner.
Skip successive dialogs while shift is pressed.
Update scripts to the new prototype of enemy:create_enemy().
Make a distinct sword stars sprite for each sword
Fix a slight alignment issue with the hurt animation of the hero.
Include build source files in the source package.
Remove usage of sol.language.get_default_language().