gui: quick keybinding bug fix
gui: mirror align control fixes
gui slider: allow to change the range of a slider at runtime

SetRange follow the wx.Slider API
Merge branch 'master' of vpn.delmic.com:odemis
gui: connect mirror alignment in tab to actuator
gui: fix names of widgets

again... hopefully for the last time
gui: first integration of visual range selector (still has a small hickup when dragging)
gui text: add SetValueRange to NumberTextCtrl

Allows to change online the range of the value
Needed for the NumberSlider.SetRange()
Merge branch 'master' of vpn.delmic.com:odemis