runKey: map differently on some websites

• add map *** runKey expect={env1:key1} keys=<default_key> with env name ...conditions
  • now Vimium C can trigger different commands on different websites / for different active elements
  • see https://github.com/gdh1995/vimium-c/wiki/Map-a-key-to-different-commands-on-different-websites
• add LinkHints.click to click selected text, focused element or the nearest clicked
• ignoreKeyboardLayout: add a partly-checked state which requires Alt to ignore layouts
• FindMode: use normalize to normalize text before finding and get a more accurate count
• when operate multiple tabs, not limit the range to one side if count < 10
• gotoRoot: if there're sed rules marked with "r", then use them to learn sub roots
• omnibox: move title before URL - just like Firefox/Chrome/Edge
• Vomnibar: now can query an encoded URL in browser history
  • add noSessions=false|true|always|start (#224, #261)
  • also add clickLike to change behaviors on *-Enter (#263)
• increase minimum_chrome_version to 47
• some other enhancements
• fix some bugs including that goToRoot and showTip may break