Don't capture cursor in screenshot.

Adds `-u` to maim to not capture the cursor.

However, maim still captures the cursor sometimes even with -u,
so this also switches the order to prefer `import` over `maim`,
which does not do this.

contrib/rushlink

@@ -44,12 +44,12 @@ del() {
 }
 
 screenshot() {
-    if command -v maim >/dev/null 2>&1; then
-        CMD="maim -ks"
-    elif command -v import >/dev/null 2>&1; then
+    if command -v import >/dev/null 2>&1; then
         CMD="import png:-"
+    elif command -v maim >/dev/null 2>&1; then
+        CMD="maim -uks"
     else
-        echo "Neither maim nor import were found. One of these is needed to make screenshots." >&2
+        echo "Neither import (imagemagick) nor maim were found. One of these is needed to make screenshots." >&2
         exit 1
     fi
     FILE=$(mktemp)