replaces all occurences of parseInt() with ~~
first try of less DOM interaction
Merge branch 'master' into js-improvements
fixes chapters
Merge pull request #94 from Kambfhase/js-improvements

JS improvements
credits to Simon in PHP file
escape all single quotes in javascript
Merge branch 'master' of github.com:gerritvanaaken/podlove-web-player; branch 'master' of github.com:SimonWaldherr/podlove-web-player
style fix, check/validate permalink
style fixes (more !important)
style fix