Make HTML include files support multiple elements
Make HTML include files support multiple elements

Previously, the top-level element of an included HTML file was
inserted into the position of the include tag; this means that if
there are multiple elements they may have to be wrapped in a <div> in
the final output.  This commit puts all the elements under the top
level div in the same place as the original element, meaning that an
include file can insert multiple elements without the inserted
elements being contained in a <div>.

pack-it-forms/pack-it-forms,pack-it-forms/pack-it-forms