DEVP-2919 Brings header behavior to the consistent state across pages.
Changes the link to the demo site.
DEVP-2919 Returns previous collapse button behavior.
DEVP-2919 Returns previous styles for collapse button
Changes the link to the marketing site.
Changes styles development version for cdn
Merge pull request #616 from WarnerMusicGroup/DEVP-2919

Devp 2919