AR\Instapaper, version 2016.1119.0.8

New keyboard shortcuts on article list page:
- 'm' to open Move to folder popover
- 's' to open Share article popover
- When either popover is open,
  - 'up/down' traverse through the list of folders/sharing-options,
  - 'enter' selects the currently highlighted option, and
  - 'esc' cancels the action, and closes the popover
- 's' or ‘/' to focus on search field
- Added 'e' as additional shortcut for archive article, alongside 'a', for compatibility with Gmail shortcuts
Added article highlight colours for sepia, grey, and dark themes
Added target="_blank" to all ‘Share by email’ and ‘Open original article’ links, so they open in a new tab
Bug Fix: When scrolling to top article on a page, scroll to page-top (0,0), to ensure part of article listing is not hidden under the search bar