Comment SoundManager class
Revert "Comment SoundManager class"

This reverts commit efbf7f9ce0a92b1405ac156025be4c427bcc3919.
Merge branch 'develop' into menus
Adding font management
Merge branch 'develop' into menus
First try adding MudFont management
Merge branch 'develop' into menus
First management of fonts (only one for the moment)
Merge branch 'develop' into menus

Conflicts:
	assets/data.xml
Merge branch 'develop' into menus
Font Management for the Menus :
* new Class Font
* two types of fonts
* receive events on fonts
Replacing menu elements: first menu
Merge branch 'develop' into menus
Cleaning main menu with right assets
Cleaning the second main menu with proper assets
Added the last player's name to the main menu
Cleaning new game menu
First try to make the Line Edit works
Closes #30 :
* proper LineEdit for entering letters
* can suppress and backspace
* can move cursor
Correction of bug in avatar display for the NewGameMenu