Move the activity check to the refresh() function

This prevents errors if the user directly calls refresh()
Omission in fullscreen
Let fullscreen dynamically add the styles it needs

Remove the dependance on CSS files
Remove styles after the animation is over
Add callbacks
This is already done by zoomImage
Shrink the image & section in order
Give fullscreen's resizeToFull a proper callback too
Queue the resizing of the group members section properly
Don't animate margins on the first resize of groupMembers
Local placeholders
Todo list
fullHolderContent fix
Remove debug & add comments
Expandable section fix
Todos and lipsum
Trimming flak
Start with group members already full
Slider pauseOnHover = false
Remove toggle link