Editable spinner

[abies]

https://docs.google.com/file/d/0BwNvfRUx_gIUWGFHWmdDTUE1XzA/edit?usp=sharing

This is a patch which allows editing values inside spinner. I was too bored with clicking button from 100 to 300 each time I had to change the value…
It is still allowing only valid values to be entered - validation is done on exiting the field or trying to bump it up or down.

[t0neg0d]

This is most appreciated! I’ll have this applied tomorrow morning when I finally get a chance to get back to things! Thanks a ton for this!