GH-338, GH-513, GH-700 Unify edit instance with console window

* The resulting instance window can be closed at any point.
* Main window is kept open and running instances are marked with a badge.
* Multiple instances can now run from the same MultiMC - it's even more **multi** now.
* MultiMC can be entirely closed, keeping Minecraft(s) running.

application/resources/multimc/multimc.qrc

@@ -150,6 +150,15 @@
 		<file>48x48/status-yellow.png</file>
 		<file>64x64/status-yellow.png</file>
 
+		<!-- A status icon for things that are in progress/running... Our own. -->
+		<file>16x16/status-running.png</file>
+		<file>24x24/status-running.png</file>
+		<file>22x22/status-running.png</file>
+		<file>32x32/status-running.png</file>
+		<file>48x48/status-running.png</file>
+		<file>64x64/status-running.png</file>
+		<file>scalable/status-running.svg</file>
+
 		<!-- Plugin (blue recolor), CC-BY-SA 3.0, Oxygen icons. -->
 		<file>16x16/loadermods.png</file>
 		<file>24x24/loadermods.png</file>

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