Add double click tap zones for going to next/prev chapter and switches for changed swipe behaviour
Minor optimizings (elseif)
Added support for configurable swipes and jumping to next/previous chapter
New function to count the actual page of the current chapter
Added support for configurable swipes
added locals and removed tabs
Made some varaibales local
Merge pull request #690 from WS64/master

Go to next/prev chapter plus configurable swipe directions