feature: change pages by using cursor keys

[krHERO]

it would be very helpful, if turning pages is possible with cursor keys, in addition to clicking

[bwbohl]

this would indeed be a very good enhancement and points our nose to reimplementing keyboard shortcuts in a wider manner... @nikobeer @roewenstrunk @elena1113 @kepper : could we possibly find a timespan for a sprint to fix this?

[roewenstrunk]

Elena is going to take care of the shortcuts. Maybe we could collect some wishes here…

[krHERO]

see also Edirom/Edirom-Online-Frontend#26

[krHERO]

will be closed cause content is kind of duplicated with Edirom/Edirom-Online-Frontend#26