Squashed 'src/libs/sticky-list-headers/' changes from 355d2ec..b323b7b

b323b7b minifying
eb2c834 Merge commit '426a653665a1bf5bd69f78f0372dffbc1a820113'
3752372 bugfixes in webkit
0dc6d1c Merge branch 'master' of github.com:semantic-web-library/sticky-list-headers
ad5074d browsers that are not supporting nth-of-type query selector
6294339 browsers that are not supporting nth-of-type query selector
fb2b52a bug fix for browser that does not support nth-of-type query selector

git-subtree-dir: src/libs/sticky-list-headers
git-subtree-split: b323b7b01e90927ce3fd53cca632055556ea6809
Merge commit 'ddde66b590db515a65ba78d89469ebfc67555dfd'