Code snippets for custom keyboard shortcuts

Firefox already have very large number of keyboard shortcuts, and other addons also provide their own keyboard shortcuts, I cannot find out safe combinations for my features. So I gave up and decided to provide only APIs for other addons. Please use generic addons to customize keyboard shortcuts which can define custom actions based on scripts. Sorry.

See also:

• Wiki page collecting keyboard shortcuts · Issue #669
• Toggle hotkey · Issue #156
• Feature Request: Close Group Shortcut · Issue #274
• Keyboard Shortcuts for modifying tree · Issue #772
• Supporting PageUp, PageDown, Home, End keys in the tab list · Issue #836