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