Keyboard Shortcuts (enhancement)

[gitowok]

Hi, a really good improvement would be some keyboard short-cuts for next/previous article. I use a bluetooth keyboard, and sometimes a presenter remote "clicker" for convenience - it would be really handy to be able to skip to the next article without touching the screen.

Bluetooth keyboards and some wireless game-pads can send arrow keys, so perhaps up/down arrow keys for news feeds, and left/right arrow keys for articles. Most (all) presenter remotes only send pgup/pgdn keyboard events, so the best use would be bound to prev/next article.

By the way, your port to ubuntu touch is appreciated beyond measure - by far the most of my screen time is spent in this app. Many thanks!