Feature request: touch support

[MorsMortium]

I have a device with a touch screen. From the GUI everything works (search, selecting skin color, selecting category, scrolling the emoji list with swipes), but selecting emojies does not. It puts them in a hover state, even multiple at the same time. Consider allowing controlling with long and short taps. Either long taps for left click and short taps for right or the other way around.