This reverts commit 3d4b277a.

Reverting temporarily for the sake of completeness and confirming
testing results.

Sub-items would incorrectly calculate as having bounds of {0,0} - {0,0}
because it did not enumerate group sub-items, so group sub-items would
not snap correctly.  This fixes group sub-item snapping so that bounds
of group sub-items are calculated, transformed by their group, and added
to the snapping boundary.  Bounds of group sub-items will now snap as
though they were normal items.

libobs: Fix typo in function names

UI: Remove warning when using separate QSV encoders

CI: Use HTTPS for downloading macOS deps package

Pull Request #1420 changed the URL for the macOS deps package. When it
did that, it also changed the URL from HTTPS to HTTP. Since this asset
is available over HTTPS, we should use that.

Correct "regsiter" to "register" in a couple function names. These
functions are currently unused. Let's correct these names before they
start getting used.

The ability to use multiple separate QSV encoders was added in Pull
Request #1341 (commit 3a08e858).
This error message was left in place, so let's remove it now.

Missed one string.

rtmp-services: Add DTube

cmake: Prevent policy CMP0072 warning

obs-qsv11: Initialize member variable

CI: Update OSX Deps package

UI: Make OBS bitness more specific in title bar and log

win-capture: Avoid segfault when retrieve size

UI: Theme fixes

This hides the dock icon when minimizing OBS to the tray on OSX. This
also fixes the bugs with minimizing on startup (and hides the dock icon
correctly in that case as well).

Closes obsproject/obs-studio#1430

This could cause an infinite recursion if "show_in_multiview" was false
for a scene.

Closes obsproject/obs-studio#1426

This reverts commit 10022a41.

Fixes a few small issues with the new SourceTree, warning/error
labels, and properties view colors.

The browser source would always create the source on first start
regardless of whether "shutdown when not showing" was set or not and the
source wasn't visible.  This fixes the issue by checking whether the
source is actually showing or not in that case.

If a group's sub-item is selected in the list box and you select the
group via the preview, the sub-item would be deselected, but that
deselection would not be applied to the sub-item in the list box despite
being deselected.

Fixes an issue where the user could not perform a horizontal/vertical
flip, or rotate group sub-items via the transform context menu.

Useful when you need to modify transform properties of group sub-items
and have the transform available immediately (group sub-items always
automatically defer their transform update to the next frame).

When a group's transform was scaled down, that scale would not apply to
grabbing the handles of sub-items, so the "handle radius" would
incorrectly be miscalculated (the handle radius calculation for the
sub-item would be scaled down by the parent's scaling, making it too
small to grab).  Instead of calculating relative to the current parent,
this fixes the issue by operating in screen space at all times.

UI: Set replay buffer button as checkable

Fixes a bug where sources that are flipped vertically and/or
horizontally would not maintain their flipped state.