The goal of this story is to re-organize the fragment panel to give an easy access to "general" and "fragment structures".
Given the user is looking at the fragment panel
When clicking on the + button of the fragments panel. (see mockups)
Then the user has access to fragment list and can drag and drop fragments to the Page.
When clicking on the arrow (see mockups):
Then the user has access to:
NOTE: "Content" icon is remaining as it is but the order is changed (see below).