Ability to hide text hints

[rr-]

Issue type:

• Feature request

Version:

Vimperator: 3.15.0 (created: 2016/10/05 01:11:26)
Firefox:    Mozilla/5.0 (X11; Linux x86_64; rv:49.0) Gecko/20100101 Firefox/49.0

Description:

Text hints often look very ugly:

I'd like to disable them. To get rid of text hints I need to set hintinputs to empty string. But this removes the ability to target radio and checkboxes via their labels, and I don't want to lose that.