v0.1.809

Pre-release of RIDE 2.0

Changelog:
keyboard icon on lbar opens Prefs on Keyboard tab
improved prefs dialogue for window title
don't autocomplete in editors without syntax highlighting
enable syntax highlighting only for some editor types
more subs for "window title" setting
made window title configurable
removed some unnecessary setTimeout()-s
avoid fractional zoom level and dont record it if 0
editor.coffee: made opts.debugger a local variable
no need to support $DYALOG_IDE_THEME
used prefs API for prefixKey (`)
used prefs API for most access to localStorage
introduced an internal API for accessing localStorage
update window title when wsid changes