Allow swipe west to jump to current page's first link (easier than clicking on small links)
Also fixed existing function names to comply with style guide.
This is a major overhaul of the hardware abstraction layer.
A few notes:
General platform distinction happens in
frontend/device.lua
which will delegate everything else to
frontend/device/<platform_name>/device.lua
which should extend
frontend/device/generic/device.lua
Screen handling is implemented in
frontend/device/screen.lua
which includes the *functionality* to support device specifics.
Actually setting up the device specific functionality, however,
is done in the device specific setup code in the relevant
device.lua file.
The same goes for input handling.
If "Follow links" options is not checked links won't be followed.
The "Follow links" option is checked by default.
This option affect both PDF and EPUB documents.
