This reverts commit 8da0e95c.

As the registration of hidden and visible pages can take place
asynchronously, the array of hidden and visible pages must be sorted

Add edit button, so it is clear where to click to edit.

Restrict maximun size of image.

#638

The delay is used to check whether a selection is still available after
PointerUp, as this is often deleted in Firefox under Windows mobile

Helps to mark text on windows mobile, because the contextmenu hides the
handles bars of the selection

#634

#632

#631

This way it can be used for testing.

This helps accessibility in general and specifically allows testing for 
it.

#628

...to not be enabled

This is for adding and duplicating sections.

#626

This fixes an issue where items could be added to only-one-item lists 
with replacement, when the  item to be replaced has the same list as 
origin.

#624

Fixed by using styles as in text field to define the background color

#625

#611

#623

#609, #622, #601

#617

#611

#582

#613

#611

#612