menu array : code readability

* drop hardcoded index in order to avoid oversights
* indented array construction instead of line by line for readability
Merge remote-tracking branch 'fusinv/master'
Merge remote-tracking branch 'origin/master'
Merge remote-tracking branch 'origin/master'
Merge remote-tracking branch 'origin/master'
Merge remote-tracking branch 'origin/master'

Conflicts:
	inc/menu.class.php