Append uploaded picture to Images collection on the gallery

Also
	- Spinner and Modal can live together without removing
	the blur effect from the body after closing one or the another
	- Gallery displays the right image after touching it on the grid
	- Images collection has been introduced
	- Gallery code refactoring (How we create images for the grid
	and how we load a newly created image to be compatible with
	those already loaded in the Images collection)
	- Improved the display of the spinner
	- Expanded the options in the Detachable view, now we can
	let it know if it will append or prepend, it can also use
	a jQuery effect to appear or disappear