Add openlinks in foreground mode and fix #1035
Recognise <ctrl> key in LinkHints
Fix typo
Remove additional unnecessary checks
Allow tap to toggle LinkHints mode, remove nonfiring code
Prevent passing through <ctrl> in LinkHints
Change description and names in LinkHints for clarity
Remove unnecessary checks for ctrl, shift keys in LinkHints
Turn off debug mode

I think we want to leave it off in the shipped version
Tweak a few comments
Merge remote-tracking branch 'mrmr1993/openLinkInFGTab'

Conflicts:
	content_scripts/link_hints.coffee
Tweak command description
Unbind activate in foreground by default

1) C-F doesn't seem like a good choice
2) I'm not sure how many folks will use this. Maybe a lot of people?