-Made asset sharing support https
-Many fixes to HTTPRequest
-Added an asset installer dialog
-Visual cleanups to asset sharing tab
-Fixed some issues in ScrollContainer, hope it does not break things
-Asset sharing tab is not visible (hidden on purpose) for now.
-ability to edit multiple scenes at the same time
-resource internal IDs are now persistent, this makes multiple scene
editing possible but maaaaay result in file corruption bugs (tested and
could not find anything but possibility exists because core code
changed, report immediately if you find this).
-properly save settings, layout, etc when edited
-script editing is independent from scene editing now
-show a yellow box when a script belongs to the scene
