update package versions. improve grunt build

Merge pull request Soundnode#730 from dgattey/fix-619

Fix for wrong pointer on hover Soundnode#619

release v0.6.3

update thumb to newest version

bump to next version 0.6.1

Merge pull request Soundnode#408 from Pitros/fix-likes

Fixed likes on stream view

update screenshot v0.5.9

bump image to new version

Merge pull request Soundnode#321 from Pitros/visual-changes

Smaller graphical changes - player, following page, top frame, loading

improve about view and bump version to release v0.5.6