make auto-increment an option instead of being mandatory

[Jaap Karssenberg]

if you type "1 teaspoon sugar" and press enter,
it will print "2 ". you either have to delete it, or to press enter and
come back to be able to write an item list.
same goes with +, $...
50$ test will print 51$

this is very anoying when creating lists of items (shopping, cooking,
.....)

could this be optionnal ?

Reported by: Xavier

[Jaap Karssenberg (jaap.karssenberg)]

Patch committed to trunk

[Jaap Karssenberg (jaap.karssenberg)]

Fixed in release 0.26.