Fix error with handlerStack in link_hints content script
Merge pull request #838 from sainaen/fix_handlerStack

Fix minor error with handlerStack in content script
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