[Inkscape-devel] Selector keybinding change

* Draging the scale handles with Alt now scales selection by an integer factor, i.e. up to 2, 3, 4, etc. times the original size or down to 1/2. 1/3, 1/4, etc. of the original size (in any of the two dimensions independently). This replaces the old and rarely used "slow" scaling mode with Alt.

Admittedly this use of Alt is not very consistent with others - I would prefer to use Ctrl for that but it's already used for preserving ratio. At least, this mode is much more useful than the Sodipodi-era, very counterintuitive old "slow" mode where a move of the mouse pointer resulted in 1/10 of the displacement.