Overhaul end user documentation

docs/user_documentation/queue/rearrange_content.md

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+# Rearrange content in your queue
+
+```{note}
+Rearranging content is currently only supported on the desktop.
+```
+
+You can change the order of content in your queue at any time. To do this:
+
+1. Select the up arrow ({fa}`caret-up`) on the queue menu to expand the queue.
+2. Pick up tracks by selecting the grip lines on the left. Your mouse pointer shows a hand ({fa}`hand-grab-o`).
+3. Drop the tracks in their new position in the queue.
+4. Select {guilabel}`Close` to close the queue.
+
+That's it! You've rearranged the content in your queue.